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Spinal neuromodulation

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https://www.readbyqxmd.com/read/28060912/early-fesoterodine-fumarate-administration-prevents-neurogenic-detrusor-overactivity-in-a-spinal-cord-transected-rat-model
#1
Xavier Biardeau, Mikolaj Przydacz, Shachar Aharony, George Loutochin, Lysanne Campeau, Maeva Kyheng, Jacques Corcos
BACKGROUND: In spinal cord injury, onset of detrusor overactivity (DO) is detrimental for quality of life (incontinence) and renal risk. Prevention has only been achieved with complex sophisticated electrical neuromodulation techniques. PURPOSE: To assess the efficacy of early fesoterodine fumarate (FF) administration in preventing bladder overactivity in a spinal cord transected (SCT) rat model. METHODS: 33 Sprague-Dawley rats were allocated to 6 groups-Group 1: 3 normal controls; Group 2: 6 SCT controls; Group 3: 6 SCT rats + FF 0...
2017: PloS One
https://www.readbyqxmd.com/read/28042918/the-neurostimulation-appropriateness-consensus-committee-nacc-safety-guidelines-for-the-reduction-of-severe-neurological-injury
#2
Timothy R Deer, Tim J Lamer, Jason E Pope, Steven M Falowski, David A Provenzano, Konstantin Slavin, Stanley Golovac, Jeffrey Arle, Joshua M Rosenow, Kayode Williams, Porter McRoberts, Samer Narouze, Sam Eldabe, Shivanand P Lad, Jose A De Andrés, Eric Buchser, Philippe Rigoard, Robert M Levy, Brian Simpson, Nagy Mekhail
INTRODUCTION: Neurostimulation involves the implantation of devices to stimulate the brain, spinal cord, or peripheral or cranial nerves for the purpose of modulating the neural activity of the targeted structures to achieve specific therapeutic effects. Surgical placement of neurostimulation devices is associated with risks of neurologic injury, as well as possible sequelae from the local or systemic effects of the intervention. The goal of the Neurostimulation Appropriateness Consensus Committee (NACC) is to improve the safety of neurostimulation...
January 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28031400/spinal-cord-direct-current-stimulation-differentially-modulates-neuronal-activity-in-the-dorsal-and-ventral-spinal-cord
#3
Weiguo Song, John H Martin
Spinal cord direct current stimulation (sDCS) has the potential for promoting motor function after injury through its modulatory actions on sensory processing, reflex functions, the motor cortex (M1) motor map, and motor output. Here we addressed systems-level mechanisms underlying sDCS neuromodulation of spinal circuits activated by M1 and peripheral forelimb electrical stimulation in anesthetized healthy rats. We determined the effects of cathodal and anodal sDCS (c- and a-sDCS) on local field potentials (LFP) and single-unit activity recorded at 32 sites simultaneously within the 6th cervical segment using a silicon multi-electrode array...
December 28, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27988174/-medico-economic-evaluation-of-urological-cares-of-spinal-cord-injured-patients-a-review
#4
C Guillot-Tantay, E Chartier-Kastler, Q Manach, M-A Perrouin-Verbe, P Denys, V Phé
INTRODUCTION: To provide an overview of the urological management of spinal cord injured patients based on an economic analysis. MATERIALS AND METHODS: A literature search from January 1994 to December 2014 was performed using Medline and Embase database using the following keywords: cost-effectiveness; cost-benefit; cost-utility; spinal cord injury; neurogenic bladder; intermittent catheterization; antimuscarinics; botulinum toxin; sacral neuromodulation; tibial nerve; Brindley; sphincterotomy...
January 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/27981912/probing-the-human-spinal-locomotor-circuits-by-phasic-step-induced-feedback-and-by-tonic-electrical-and-pharmacological-neuromodulation
#5
Ursula S Hofstoetter, Maria Knikou, Pierre A Guertin, Karen Minassian
The mammalian lumbar spinal cord experimentally isolated from supraspinal and afferent feedback input remains capable of expressing some basic locomotor function when appropriately stimulated. This ability has been attributed to spinal neural circuits referred to as central pattern generators (CPGs). In individuals with a severe spinal cord injury, rhythmic activity in paralyzed leg muscles can be generated by phasic proprioceptive feedback during therapist- or robotic-assisted stepping on a motorized treadmill...
December 14, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27980114/sodium-pumps-mediate-activity-dependent-changes-in-mammalian-motor-networks
#6
Laurence D Picton, Filipe Nascimento, Matthew J Broadhead, Keith T Sillar, Gareth B Miles
: Ubiquitously expressed sodium pumps are best known for maintaining the ionic gradients and resting membrane potential required for generating action potentials. However, activity- and state-dependent changes in pump activity can also influence neuronal firing and regulate rhythmic network output. Here we demonstrate that changes in sodium pump activity regulate locomotor networks in the spinal cord of neonatal mice. The sodium pump inhibitor, ouabain, increased the frequency and decreased the amplitude of drug-induced locomotor bursting, effects which were dependent on the presence of the neuromodulator dopamine...
December 15, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27959284/the-proposed-use-of-cervical-spinal-cord-stimulation-for-the-treatment-and-prevention-of-cognitive-decline-in-dementias-and-neurodegenerative-disorders
#7
Nestor D Tomycz
Cervical spinal cord stimulation is a well-established treatment for intractable neuropathic upper extremity pain. More than 20years ago it was demonstrated that cervical spinal cord stimulation could engender an increase in cerebral blood flow. Cerebral blood flow has been shown to be decreased in many patients with dementia and in various neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease. Furthermore, there is evidence that reduced cerebral blood flow worsens neurodegenerative disease and may also predict which patients progress from mild cognitive impairment to full blown Alzheimer's disease...
November 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27958714/a-chemogenetic-receptor-that-enhances-the-magnitude-and-frequency-of-glycinergic-inhibitory-postsynaptic-currents-without-inducing-a-tonic-chloride-flux
#8
Robiul Islam, Yan Zhang, Li Xu, Pankaj Sah, Joseph W Lynch
The gene transfer-mediated expression of inhibitory ion channels in nociceptive neurons holds promise for treating intractable pain. Chemogenetics, which involves expressing constructs activated by biologically inert molecules, is of particular interest as it permits tunable neuromodulation. However, current chloride-permeable chemogenetic constructs are problematic as they mediate a tonic chloride influx which over time would deplete the chloride electrochemical gradient and reduce inhibitory efficacy. Inflammatory pain sensitization can be caused by prostaglandin E2-mediated inhibition of glycinergic inhibitory postsynaptic currents in spinal nociceptive neurons...
December 15, 2016: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/27935110/involvement-of-opioid-receptors-in-inhibition-of-bladder-overactivity-induced-by-sacral-neuromodulation-in-pigs-a-possible-action-mechanism
#9
Xing Li, Limin Liao, Guoqing Chen, Zhaoxia Wang, Han Deng
AIMS: To determine the role of opioid receptors in the inhibition of bladder overactivity by sacral neuromodulation (SNM) in pigs, and explore the possible mechanism of SNM. METHODS: Both implant-driven stimulators of the S3 spinal nerve were implanted in seven pigs. Naloxone and tramadol were administered. Multiple cystometrograms were performed to determine the effects of SNM and opioid receptors on the micturition reflex by infusing normal saline (NS) or acetic acid (AA)...
December 9, 2016: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/27927655/role-of-cannabinoid-receptor-type-1-in-tibial-and-pudendal-neuromodulation-of-bladder-overactivity-in-cats
#10
Xuewen Jiang, Michelle Yu, Jamie Uy, Thomas Fuller, Cameron Jones, Bing Shen, Jicheng Wang, James R Roppolo, William de Groat, Changfeng Tai
The role of cannabinoid type 1 (CB1) receptors in tibial and pudendal neuromodulation of bladder overactivity induced by intravesical infusion of 0.5% acetic acid (AA) was determined in α-chloralose anesthetized cats. AA irritation significantly (p<0.01) reduced bladder capacity to 36.6±4.8% of saline control capacity. Tibial nerve stimulation (TNS) at 2 or 4 times threshold (T) intensity for inducing toe movement inhibited bladder overactivity and significantly (p<0.01) increased bladder capacity to 69...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27854104/new-practical-approaches-to-chemotherapy-induced-neuropathic-pain-prevention-assessment-and-treatment
#11
REVIEW
Neil Majithia, Charles L Loprinzi, Thomas J Smith
Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most disabling and demoralizing problems that arise for cancer survivors. When investigating symptoms of numbness, tingling, or pain in the extremities, it is critical to determine whether the problem is neuropathic, somatic, or mixed. If the diagnosis is CIPN, it is important to weigh the potential benefits and harms of possible treatment options, and to devise an evidence-based multimodality treatment program. Such programs may include mixtures of opioid and nonopioid adjunctive medications, based on evidence from CIPN trials, and also extrapolation from trials in patients with other neuropathic pain syndromes-although such extrapolating must be done with caution, since other syndromes sometimes respond to agents that CIPN does not respond to...
November 15, 2016: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/27843683/spinal-neuromodulation-as-a-novel-surgical-option-for-failed-back-surgery-syndrome-following-rhbmp-exuberant-bony-growth-in-instrumented-lumbar-fusion-a-case-report-and-literature-review
#12
Ramsis F Ghaly, Alexei Lissounov, Tatiana Tverdohleb, David Kohanchi, Kenneth D Candido, Nebojsa Nick Knezevic
BACKGROUND: Bone morphogenic protein (BMP) for instrumented lumbar fusion was approved in 2002, and since then has led to an increasing incidence of BMP-related neuropathic pain. These patients are usually resistant to conventional medical therapy and frequently undergo multiple surgical revisions without any pain relief. CASE DESCRIPTION: A 58-year-old male was referred to the author's outpatient clinic after four lumbar surgeries did not provide satisfactory pain relief...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27828784/peripheral-neuromodulation-for-the-treatment-of-postamputation-neuroma-pain-a-case-report
#13
Kaare Meier, Thomas F Bendtsen, Jens Christian Sørensen, Lone Nikolajsen
Neuroma pain can be severe, persistent, and treatment resistant. We present a case of a 37-year-old female amputee who suffered from severe neuroma pain, which had proved resistant to pharmacologic treatment, glycerol injections, spinal cord stimulation, radiofrequency thermocoagulation, and repeated surgical removals. After treatment with peripheral nerve stimulation, using a St. Jude Medical Octrode lead implanted percutaneously under ultrasound guidance close to her painful neuroma, her ongoing pain dramatically decreased from 8 to 3 on a numeric rating scale (0-10)...
January 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/27786243/new-strategies-for-the-treatment-and-prevention-of-primary-headache-disorders
#14
REVIEW
Nathaniel M Schuster, Alan M Rapoport
The primary headache disorders, which include migraine, cluster headache and tension-type headache, are among the most common diseases and leading causes of disability worldwide. The available treatment options for primary headache disorders have unsatisfactory rates of efficacy, tolerability and patient adherence. In this Review, we discuss promising new approaches for the prevention of primary headache disorders, such as monoclonal antibodies targeting calcitonin gene-related peptide (CGRP) or its receptor, and small-molecule CGRP receptor antagonists...
October 27, 2016: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/27783854/neurocardiology-structure-based-function
#15
Jeffrey L Ardell, John Andrew Armour
Cardiac control is mediated via a series of reflex control networks involving somata in the (i) intrinsic cardiac ganglia (heart), (ii) intrathoracic extracardiac ganglia (stellate, middle cervical), (iii) superior cervical ganglia, (iv) spinal cord, (v) brainstem, and (vi) higher centers. Each of these processing centers contains afferent, efferent, and local circuit neurons, which interact locally and in an interdependent fashion with the other levels to coordinate regional cardiac electrical and mechanical indices on a beat-to-beat basis...
September 15, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/27778372/lumbosacral-spinal-segmental-contributions-to-tibial-and-pudendal-neuromodulation-of-bladder-overactivity-in-cats
#16
Utsav Bansal, Thomas W Fuller, Xuewen Jiang, Jathin Bandari, Zhaocun Zhang, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
AIMS: To determine the spinal segmental afferent contributions to tibial and pudendal inhibition of bladder overactivity. METHODS: Intravesical infusion of 0.5% acetic acid was used to irritate the bladder and induce bladder overactivity in anesthetized cats. Tibial or pudendal nerve stimulation was used to suppress the bladder overactivity and increase bladder capacity during cystometry. L5-S3 dorsal roots ipsilateral to the stimulation were exposed by a laminectomy and transected sequentially during the experiments to determine the role of individual dorsal roots in tibial or pudendal neuromodulation...
October 24, 2016: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/27749479/does-sacral-nerve-stimulation-improve-continence-through-enhanced-sensitivity-of-the-anal-canal-a-pilot-study
#17
S Haas, C Brock, K Krogh, M Gram, L Lundby, A M Drewes, S Laurberg
BACKGROUND: It has been suggested that the effects of sacral nerve stimulation against fecal incontinence involve neuromodulation at spinal or supraspinal levels. OBJECTIVE: This study aims to investigate the afferent sensory pathways from the anorectum before and during sacral nerve stimulation. DESIGN: This is an explorative study. PATIENTS: Fifteen women with idiopathic fecal incontinence (mean age, 58 ± 12.2 years) were selected...
November 2016: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/27729478/contribution-of-gabaa-glycine-and-opioid-receptors-to-sacral-neuromodulation-of-bladder-overactivity-in-cats
#18
Xuewen Jiang, Thomas W Fuller, Jathin Bandari, Utsav Bansal, Zhaocun Zhang, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
In α-chloralose-anesthetized cats, we examined the role of GABAA, glycine, and opioid receptors in sacral neuromodulation-induced inhibition of bladder overactivity elicited by intravesical infusion of 0.5% acetic acid (AA). AA irritation significantly (P < 0.01) reduced bladder capacity to 59.5 ± 4.8% of saline control. S1 or S2 dorsal root stimulation at threshold intensity for inducing reflex twitching of the anal sphincter or toe significantly (P < 0.01) increased bladder capacity to 105.3 ± 9...
December 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27721996/spinal-plasticity-and-behavior-bdnf-induced-neuromodulation-in-uninjured-and-injured-spinal-cord
#19
Sandra M Garraway, J Russell Huie
Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophic factor family of signaling molecules. Since its discovery over three decades ago, BDNF has been identified as an important regulator of neuronal development, synaptic transmission, and cellular and synaptic plasticity and has been shown to function in the formation and maintenance of certain forms of memory. Neural plasticity that underlies learning and memory in the hippocampus shares distinct characteristics with spinal cord nociceptive plasticity...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27714945/preferred-frequencies-and-waveforms-for-spinal-cord-stimulation-in-patients-with-complex-regional-pain-syndrome-a-multicentre-double-blind-randomized-and-placebo-controlled-crossover-trial
#20
N Kriek, J G Groeneweg, D L Stronks, D de Ridder, F J P M Huygen
BACKGROUND: Conventional tonic spinal cord stimulation (SCS) is an effective treatment for patients with therapy-resistant complex regional pain syndrome (CRPS). Although the therapeutic effect of SCS can diminish over time due to tolerance, pain control can be regained by changing the pulse width and the amplitude and/or by increasing the stimulation frequency. This multicentre, double-blind, randomized and placebo-controlled crossover trial was conducted to investigate whether more effective pain reduction is achieved with different frequencies (trial registration, current controlled trials, ISRCTN 36655259)...
October 7, 2016: European Journal of Pain: EJP
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