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https://www.readbyqxmd.com/read/29331287/characterizing-the-effects-of-deep-brain-stimulation-with-magnetoencephalography-a-review
#1
REVIEW
Irene E Harmsen, Nathan C Rowland, Richard A Wennberg, Andres M Lozano
BACKGROUND: Deep brain stimulation (DBS) is an important form of neuromodulation that is being applied to patients with motor, mood, or cognitive circuit disorders. Despite the efficacy and widespread use of DBS, the precise mechanisms by which it works remain unknown. Over the last decade, magnetoencephalography (MEG) has become an important functional neuroimaging technique used to study DBS. OBJECTIVE: This review summarizes the literature related to the use of MEG to characterize the effects of DBS...
January 4, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29330080/use-of-a-pulsed-radiofrequency-energy-device-peak-plasmablade%C3%A2-in-neuromodulation-implant-revisions
#2
I Ughratdar, K A Kawsar, R Mitchell, R Selway, K Ashkan
BACKGROUND: Battery replacement or revision surgery for neuromodulation implants is conventionally performed using sharp dissection. Meticulous dissection within thick scar tissue is vital to avoid damage to surrounding lead(s) which could result in more extensive revision surgery. Traditional electrosurgery devices are contraindicated as the emitted energy can be transferred to the hardware resulting in implant or tissue damage with severe consequent complications. OBJECTIVE: We report our experience and potential applications of a novel, pulsed monopolar radiofrequency energy device (PEAK PlasmaBlade™, Medtronic plc) which facilitates dissection around implants without the risk of damaging or transmitting energy through the system...
January 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29329897/-botulinium-toxin-and-idiopathic-overactive-bladder-multicentric-contempory-management-in-bourgogne
#3
A Schneider, B Tourlonias, L Cormier, E Mourey, N Koutlidis, E Delorme, J Pasquale, I Kermarec, A-D Foahom-Kamwa, V Bonniaud
INTRODUCTION: Since 2014, OnabotulinumtoxinA Botox® (Allergan, Inc., Irvine, USA) represents a new therapeutic option for second-line treatment of idiopathic overactive bladder. The purpose of the current study was to evaluate practices of surgeons using onabotulinium toxin (BoNTA) in this indication. MATERIAL AND METHODS: All urogynecology centers of the country were asked in order to list all patients who were treated since marketing autorisation. Patient symptoms, previous treatments, paraclinic evaluations, data of surgery and the characteristics of the follow up were collected and analyzed...
January 9, 2018: Progrès en Urologie
https://www.readbyqxmd.com/read/29329442/conventional-radiofrequency-thermocoagulation-vs-pulsed-radiofrequency-neuromodulation-of-ganglion-impar-in-chronic-perineal-pain-of-nononcological-origin
#4
Hammad Usmani, G P Dureja, Roshan Andleeb, Nazia Tauheed, Naiyer Asif
Background: Chronic nononcological perineal pain has been effectively managed by ganglion Impar block. Chemical neurolysis, cryoablation, and radiofrequency ablation have been the accepted methods of blockade. Recently, pulsed radiofrequency, a novel variant of conventional radiofrequency, has been used for this purpose. Study Design: This was a prospective, randomized, double-blind study. Setting: Two different interventional pain management centers in India...
January 10, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29325855/gating-of-long-term-potentiation-ltp-in-the-thalamocortical-auditory-system-of-rats-by-serotonergic-5-ht-receptors
#5
Karen K Y Lee, Chloe N Soutar, Hans C Dringenberg
The neuromodulator serotonin (5-hydroxytryptamine, 5-HT) plays an important role in controlling the induction threshold and maintenance of long-term potentiation (LTP) in the visual cortex and hippocampus of rodents. Serotonergic fibers also innervate the rodent primary auditory cortex (A1), but the regulation of A1 plasticity by 5-HT receptors (5-HTRs) is largely uncharted. Thus, we examined the role of several, predominant 5-HT receptor classes (5-HT1ARs, 5-HT2Rs, and 5-HT3Rs) in gating in vivo LTP induction at A1 synapses of adult, urethane-anesthetized rats...
January 8, 2018: Brain Research
https://www.readbyqxmd.com/read/29324422/assimilation-of-biophysical-neuronal-dynamics-in-neuromorphic-vlsi
#6
Jun Wang, Daniel Breen, Abraham Akinin, Frederic Broccard, Henry D I Abarbanel, Gert Cauwenberghs
Representing the biophysics of neuronal dynamics and behavior offers a principled analysis-by-synthesis approach toward understanding mechanisms of nervous system functions. We report on a set of procedures assimilating and emulating neurobiological data on a neuromorphic very large scale integrated (VLSI) circuit. The analog VLSI chip, NeuroDyn, features 384 digitally programmable parameters specifying for 4 generalized Hodgkin-Huxley neurons coupled through 12 conductance-based chemical synapses. The parameters also describe reversal potentials, maximal conductances, and spline regressed kinetic functions for ion channel gating variables...
December 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/29321240/pigment-dispersing-factor-expressing-neurons-convey-circadian-information-in-the-honey-bee-brain
#7
Katharina Beer, Esther Kolbe, Noa B Kahana, Nadav Yayon, Ron Weiss, Pamela Menegazzi, Guy Bloch, Charlotte Helfrich-Förster
Pigment-Dispersing Factor (PDF) is an important neuropeptide in the brain circadian network of Drosophila and other insects, but its role in bees in which the circadian clock influences complex behaviour is not well understood. We combined high-resolution neuroanatomical characterizations, quantification of PDF levels over the day and brain injections of synthetic PDF peptide to study the role of PDF in the honey bee Apis mellifera We show that PDF co-localizes with the clock protein Period (PER) in a cluster of laterally located neurons and that the widespread arborizations of these PER/PDF neurons are in close vicinity to other PER-positive cells (neurons and glia)...
January 2018: Open Biology
https://www.readbyqxmd.com/read/29320746/sada-expressing-staphylococci-in-the-human-gut-show-increased-cell-adherence-and-internalization
#8
Arif Luqman, Mulugeta Nega, Minh-Thu Nguyen, Patrick Ebner, Friedrich Götz
A subgroup of biogenic amines, the so-called trace amines (TAs), are produced by mammals and bacteria and can act as neuromodulators. In the genus Staphylococcus, certain species are capable of producing TAs through the activity of staphylococcal aromatic amino acid decarboxylase (SadA). SadA decarboxylates aromatic amino acids to produce TAs, as well as dihydroxy phenylalanine and 5-hydroxytryptophan to thus produce the neurotransmitters dopamine and serotonin. SadA-expressing staphylococci were prevalent in the gut of most probands, where they are part of the human intestinal microflora...
January 9, 2018: Cell Reports
https://www.readbyqxmd.com/read/29320672/position-statement-a-clinical-approach-to-the-management-of-adult-non-neurogenic-overactive-bladder
#9
Eric Chung, Dominic Lee, Johan Gani, Michael Gillman, Christopher Maher, Janelle Brennan, Lydia Johns Putra, Laura Ahmad, Lewis Lw Chan
Overactive bladder (OAB) is a highly prevalent medical condition that has an adverse impact on various health-related quality-of-life domains, including a significant psychosocial and financial burden. This position statement, formulated by members of the Urological Society of Australia and New Zealand and the UroGynaecological Society of Australasia, summarises the current recommendations for clinical diagnosis and treatment strategies in patients with non-neurogenic OAB, and guides clinicians in the decision-making process for managing the condition using evidence-based medicine...
January 15, 2018: Medical Journal of Australia
https://www.readbyqxmd.com/read/29315785/three-month-clinical-results-with-a-rechargeable-sacral-neuromodulation-system-for-the-treatment-of-overactive-bladder
#10
Bertil Blok, Philip Van Kerrebroeck, Stefan de Wachter, Alain Ruffion, Frank Van der Aa, Ranjana Jairam, Marie Perrouin-Verbe, Sohier Elneil
AIMS: The primary aim of the RELAX-OAB study is to confirm the safety and efficacy of the Axonics r-SNM System, a miniaturized, rechargeable SNM system. METHODS: A total of 51 OAB patients were implanted in a single-stage implant procedure. These results represent the 3-month outcomes. Subject outcomes were evaluated using 3-day bladder diaries and quality of life questionnaires. RESULTS: A total of 31 of 34 patients (91%) that responded during an initial trial period ("Test Responders") continued to benefit from therapy with the Axonics r-SNM System at 3-months, defined as symptom improvement of ≥50% reduction in urinary voids or incontinence episodes or a return to <8 voids per day...
January 5, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29306976/deep-brain-stimulation-of-the-anterior-nucleus-of-the-thalamus-for-drug-resistant-epilepsy
#11
REVIEW
Tim A M Bouwens van der Vlis, Olaf E M G Schijns, Frédéric L W V J Schaper, Govert Hoogland, Pieter Kubben, Louis Wagner, Rob Rouhl, Yasin Temel, Linda Ackermans
Despite the use of first-choice anti-epileptic drugs and satisfactory seizure outcome rates after resective epilepsy surgery, a considerable percentage of patients do not become seizure free. ANT-DBS may provide for an alternative treatment option in these patients. This literature review discusses the rationale, mechanism of action, clinical efficacy, safety, and tolerability of ANT-DBS in drug-resistant epilepsy patients. A review using systematic methods of the available literature was performed using relevant databases including Medline, Embase, and the Cochrane Library pertaining to the different aspects ANT-DBS...
January 6, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29303111/chronic-implantation-of-cuff-electrodes-on-the-pelvic-nerve-in-rats-is-well-tolerated-and-does-not-compromise-afferent-or-efferent-fibre-functionality
#12
Jonathan J Crook, Charly Brouillard, Pedro Irazoqui, Thelma Lovick
Objective Neuromodulation of autonomic nerve activity to regulate physiological processes is an emerging field. Vagal stimulation has received most attention whereas the potential of modulate visceral function by targeting autonomic nerves within the abdominal cavity remains under-exploited. Surgery to locate intra-abdominal targets is inherently more stressful than for peripheral nerves. Electrode leads risk becoming entrapped by intestines and loss of functionality in the nerve-target organ connection could result from electrode migration or twisting...
January 5, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29302716/role-of-sacral-neuromodulation-in-modern-urogynaecology-practice-a-review-of-recent-literature
#13
REVIEW
Samina Tahseen
Sacral neuromodulation (SNM) offers promise in the therapy of many pelvic floor disorders. This innovative treatment has slowly gained popularity. A review of recent literature is presented in relation to its efficacy and complications in various pelvic floor conditions: overactive bladder and urge urinary incontinence, chronic urinary retention, painful bladder syndrome, pelvic pain and double incontinence. It is a minimally invasive, completely reversible safe procedure with good long-term outcomes. However, the treatment is costly, the revision rate is high and patients require life-long follow-up...
January 4, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29299835/a-caenorhabditis-elegans-mass-spectrometric-resource-for-neuropeptidomics
#14
Sven Van Bael, Sven Zels, Kurt Boonen, Isabel Beets, Liliane Schoofs, Liesbet Temmerman
Neuropeptides are important signaling molecules used by nervous systems to mediate and fine-tune neuronal communication. They can function as neurotransmitters or neuromodulators in neural circuits, or they can be released as neurohormones to target distant cells and tissues. Neuropeptides are typically cleaved from larger precursor proteins by the action of proteases and can be the subject of post-translational modifications. The short, mature neuropeptide sequences often entail the only evolutionarily reasonably conserved regions in these precursor proteins...
January 3, 2018: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/29298468/radiographic-position-of-the-electrode-as-a-predictor-of-the-outcome-of-interstim-therapy
#15
Abdullah Ahmed Gahzi, Mai Ahmed Banakhar, Dean S Elterman, Magdy Hassouna
PURPOSE: Sacral neuromodulation (SNM) therapy is indicated for some refractory urological conditions. The electrode lead position in sacral x-rays during routine follow-up may predict the outcome of SNM therapy. To determine whether the radiographic position of the electrode in the sacral foramen predicted the long-term outcome of SNM therapy. METHODS: This was a retrospective study of patients who underwent InterStim SNM at Toronto Western Hospital by 2 surgeons from July 2013 to March 2014...
December 2017: International Neurourology Journal
https://www.readbyqxmd.com/read/29298426/interrogating-the-spatiotemporal-landscape-of-neuromodulatory-gpcr-signaling-by-real-time-imaging-of-camp-in-intact-neurons-and-circuits
#16
Brian S Muntean, Stefano Zucca, Courtney M MacMullen, Maria T Dao, Caitlin Johnston, Hideki Iwamoto, Randy D Blakely, Ronald L Davis, Kirill A Martemyanov
Modulation of neuronal circuits is key to information processing in the brain. The majority of neuromodulators exert their effects by activating G-protein-coupled receptors (GPCRs) that control the production of second messengers directly impacting cellular physiology. How numerous GPCRs integrate neuromodulatory inputs while accommodating diversity of incoming signals is poorly understood. In this study, we develop an in vivo tool and analytical suite for analyzing GPCR responses by monitoring the dynamics of a key second messenger, cyclic AMP (cAMP), with excellent quantitative and spatiotemporal resolution in various neurons...
January 2, 2018: Cell Reports
https://www.readbyqxmd.com/read/29297293/various-wolbachia-genotypes-differently-influence-host-drosophila-dopamine-metabolism-and-survival-under-heat-stress-conditions
#17
Nataly Е Gruntenko, Yury Yu Ilinsky, Natalya V Adonyeva, Elena V Burdina, Roman A Bykov, Petr N Menshanov, Inga Yu Rauschenbach
BACKGROUND: One of the most widespread prokaryotic symbionts of invertebrates is the intracellular bacteria of Wolbachia genus which can be found in about 50% of insect species. Wolbachia causes both parasitic and mutualistic effects on its host that include manipulating the host reproductive systems in order to increase their transmission through the female germline, and increasing the host fitness. One of the mechanisms, promoting adaptation in biological organisms, is a non-specific neuroendocrine stress reaction...
December 28, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29296618/lateral-hypothalamic-activity-indicates-hunger-and-satiety-states-in-humans
#18
Omid Talakoub, Raquel R Paiva, Matija Milosevic, Marcelo Q Hoexter, Ruth Franco, Eduardo Alho, Jessie Navarro, José F Pereira, Milos R Popovic, Cary Savage, Antonio C Lopes, Pedro Alvarenga, Durval Damiani, Manoel J Teixeira, Euripides C Miguel, Erich T Fonoff, Marcelo C Batistuzzo, Clement Hamani
Lateral hypothalamic area (LHA) local field potentials (LFPs) were recorded in a Prader-Willi patient undergoing deep brain stimulation (DBS) for obesity. During hunger, exposure to food-related cues induced an increase in beta/low-gamma activity. In contrast, recordings during satiety were marked by prominent alpha rhythms. Based on these findings, we have delivered alpha-frequency DBS prior to and during food intake. Despite reporting an early sensation of fullness, the patient continued to crave food. This suggests that the pattern of activity in LHA may indicate hunger/satiety states in humans but attest to the complexity of conducting neuromodulation studies in obesity...
December 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29291416/onset-of-action-of-sacral-neuromodulation-in-lower-urinary-tract-dysfunction-what-is-the-optimal-duration-of-test-stimulation
#19
R Jairam, J Drossaerts, T Marcelissen, G van Koeveringe, Ph Van Kerrebroeck
PURPOSE: Since the development of sacral neuromodulation (SNM) a large number of patients with lower urinary tract symptoms (LUTS) have been treated with SNM. A test stimulation is performed prior to implantation. In centres worldwide the duration of this test stimulation varies considerably since it is not certain when the onset of the therapy effect can be expected. The objective of this prospective study is to evaluate the average onset time of SNM in patients with LUTS. METHODS: All patients who were eligible for treatment with SNM were asked to participate...
December 29, 2017: Journal of Urology
https://www.readbyqxmd.com/read/29289841/interhemispheric-motor-interactions-in-hemiparetic-children-with-perinatal-stroke-clinical-correlates-and-effects-of-neuromodulation-therapy
#20
Derek Eng, Ephrem Zewdie, Patrick Ciechanski, Omar Damji, Adam Kirton
OBJECTIVE: Brain stimulation and constraint therapy may enhance function after perinatal stroke but mechanisms are unknown. We characterized interhemispheric interactions (IHI) in hemiparetic children and explored their relationship to motor function and neuromodulation. METHODS: Forty-five hemiparetic perinatal stroke subjects aged 6-19 years completed a clinical trial of repetitive-transcranial magnetic stimulation (rTMS) and constraint therapy. Paired-pulse TMS measured IHI in cases and normal controls...
November 26, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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