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https://www.readbyqxmd.com/read/29679783/radiofrequency-lesioning-through-deep-brain-stimulation-electrodes-in-patients-with-generalized-dystonia
#1
Nobuhiko Takeda, Shiro Hoeisawa, Takaomi Taira, Takakazu Kawamata
BACKGROUND: Deep brain stimulation (DBS) is an established treatment for generalized dystonia. However, the DBS device is sometimes removed owing to hardware complications. Here, we present four cases of generalized dystonia treated with radiofrequency lesioning through the DBS electrodes. CASE DESCRIPTION: The patients were three men and one woman (34 to 44 years old). They had undergone DBS for generalized dystonia. However, they subsequently developed complications, such as infection, and removal of the devices became necessary...
April 18, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29676713/-deep-brain-stimulation-for-psychiatric-disorders
#2
M Figee, P R Schuurman, D Denys
- Deep brain stimulation (DBS) corrects pathological activity of neuropsychiatric brain networks with high frequency current via implanted brain electrodes.- DBS is an effective and safe treatment for therapy-refractory obsessive-compulsive disorder and potentially also for therapy-refractory major depressive disorder.- Experimental psychiatric indications for DBS are Tourette syndrome, addiction, anorexia nervosa, post-traumatic stress disorder, autism and schizophrenia.- DBS influences brain networks that are relevant for a variety of psychiatric symptoms...
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29675956/clonidine-modulates-the-activity-of-the-subthalamic-supplementary-motor-loop-evidence-from-a-pharmacological-study-combining-dbs-and-eeg-recordings-in-parkinsonian-patients
#3
Charlotte Spay, Marion Albares, Guillaume Lio, Stephane Thobois, Emmanuel Broussolle, Brian Lau, Benedicte Ballanger, Philippe Boulinguez
Clonidine is an anti-hypertensive medication which acts as an alpha-adrenergic receptors agonist. As the noradrenergic system is likely to support cognitive functions including attention and executive control, other clinical uses of clonidine have recently gained popularity for the treatment of neuropsychiatric disorders like attention-deficit hyperactivity disorder or Tourette syndrome, but the mechanism of action is still unclear. Here, we test the hypothesis that the noradrenergic system regulates the activity of subthalamo-motor cortical loops, and that this influence can be modulated by clonidine...
April 20, 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29675463/caregiver-burden-and-caregiver-appraisal-of-psychiatric-symptoms-are-not-modulated-by-subthalamic-deep-brain-stimulation-for-parkinson-s-disease
#4
Philip E Mosley, Michael Breakspear, Terry Coyne, Peter Silburn, David Smith
Subthalamic deep brain stimulation is an advanced therapy that typically improves quality of life for persons with Parkinson's disease (PD). However, the effect on caregiver burden is unclear. We recruited 64 persons with PD and their caregivers from a movement disorders clinic during the assessment of eligibility for subthalamic DBS. We used clinician-, patient- and caregiver-rated instruments to follow the patient-caregiver dyad from pre- to postoperative status, sampling repeatedly in the postoperative period to ascertain fluctuations in phenotypic variables...
2018: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/29674090/oscillatory-local-field-potentials-of-the-nucleus-accumbens-and-the-anterior-limb-of-the-internal-capsule-in-heroin-addicts
#5
Shunnan Ge, Xinyi Geng, Xuelian Wang, Nan Li, Lei Chen, Xinjing Zhang, Yongzhi Huang, Yang Li, Yukun Chen, Shouyan Wang, Guodong Gao
OBJECTIVES: The nucleus accumbens (NAc) is known to regulate the motivation and underlie addictive behaviors, and the anterior limb of the internal capsule (ALIC) is involved in several psychiatric disorders. Our study aimed to explore the functions of NAc and ALIC electrophysiologically. METHODS: The local field potentials (LFPs) of the NAc and ALIC were recorded from 7 heroin addicts treated with deep brain stimulation. Correlation analysis was made between LFP powers in various frequency bands and the subjects' neuropsychological test scores; coherence was calculated for the LFPs in NAc and ALIC...
March 30, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29671647/deep-brain-stimulation-for-trigeminal-autonomic-cephalalgias
#6
Giuseppe Messina, Giovanni Broggi, Vincenzo Levi, Angelo Franzini
Deep brain stimulation (DBS) of the posterior hypothalamic region (pHyr) has been shown to be efficacious for more than a half of patients suffering from trigeminal autonomic cephalalgias (TACs); nonetheless, controversies about the mechanisms of action and the actual site of stimulation have arisen in recent years. Areas covered: Firstly, a review of the most recent literature on the subject is presented, stressing the critical points that could, in the future, make a difference for optimal management of patients afflicted by these life-threating diseases...
April 19, 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29670511/low-frequency-microstimulation-is-locally-excitatory-in-patients-with-epilepsy
#7
Andrea Bartoli, Rémi Tyrand, Maria I Vargas, Shahan Momjian, Colette Boëx
Deep brain stimulation (DBS) could become a palliative treatment for patients with drug-resistant epilepsy for which surgery cannot be proposed. The objective of this study was to perform microstimulation to measure the effects of DBS in epilepsy locally at the level of a few neurons, with microelectrode recordings, for the first time in patients with epilepsy. Microelectrode recordings were performed before, during and after microstimulation in nine patients with refractory epilepsy. Neuronal spikes were successfully extracted from multi-unit recordings with clustering in six out of seven patients during hippocampal and in one out of two patients during cortical dysplasia microstimulation (1 Hz, charge-balanced biphasic waveform, 60 μs/ph, 25 μA)...
2018: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/29670050/epilepsy-and-neuromodulation-randomized-controlled-trials
#8
Churl-Su Kwon, Valeria Ripa, Omar Al-Awar, Fedor Panov, Saadi Ghatan, Nathalie Jetté
Neuromodulation is a treatment strategy that is increasingly being utilized in those suffering from drug-resistant epilepsy who are not appropriate for resective surgery. The number of double-blinded RCTs demonstrating the efficacy of neurostimulation in persons with epilepsy is increasing. Although reductions in seizure frequency is common in these trials, obtaining seizure freedom is rare. Invasive neuromodulation procedures (DBS, VNS, and RNS) have been approved as therapeutic measures. However, further investigations are necessary to delineate effective targeting, minimize side effects that are related to chronic implantation and to improve the cost effectiveness of these devices...
April 18, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29669394/identification-of-metabolites-of-helicid-in-vivo-using-ultra-high-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry
#9
Xinpeng Diao, Man Liao, Xiaoye Cheng, Caijuan Liang, Yupeng Sun, Xia Zhang, Lantong Zhang
Helicid is an active natural aromatic phenolic glycoside ingredient originating from well-known traditional Chinese herb medicine and has the significant effects of sedative hypnosis, anti-inflammatory analgesia and antidepressant. In this study, we analyzed the potential metabolites of Helicid in rats by multiple mass defect filter (MMDF)and dynamic background subtraction (DBS)in ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS). Moreover, we used a novel data processing method 'key product ions (KPIs)' to rapidly detect and identifymetabolites as an assistant tool...
April 18, 2018: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29667473/harnessing-neuroplasticity-modern-approaches-and-clinical-future
#10
Andrew Octavian Sasmita, Joshua Kuruvilla, Anna Pick Kiong Ling
Neurological diseases and injuries to the nervous system may cause inadvertent damage to neuronal and synaptic structures. Such phenomenon would catastrophically accumulate, leading to the development of neurological and neurodegenerative disorders which might affect memory, cognition, and motoric functions. The body has various negative feedback systems which are able to induce beneficial neuroplastic changes in mediating some neuronal damage, however, such efforts are often not enough to ameliorate the derogatory changes...
April 18, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29665982/oscillatory-activity-and-cortical-coherence-of-the-nucleus-basalis-of-meynert-in-parkinson-s-disease-dementia
#11
Muhammad Nazmuddin, D L Marinus Oterdoom, J Marc C van Dijk, Jonathan C van Zijl, Anne K Kampman, Gea Drost, Teus van Laar, Martijn Beudel
BACKGROUND: Deep brain stimulation (DBS) of the nucleus basalis of Meynert (NBM) is a new potential treatment for Parkinson's Disease dementia (PDD) and other types of dementia. To get a better understanding of this structure, its local neurophysiological properties and cortical connectivity patterns were studied. METHODS: We simultaneously recorded DBS local field potentials (LFPs) and electroencephalography (EEG) in two patients with PDD. Both patients had DBS electrodes in the internal globus pallidus (GPi) with one or more distal contacts close to or inside the NBM...
March 28, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29665520/treatment-resistant-depression-and-suicidality
#12
REVIEW
Isidoor O Bergfeld, Mariska Mantione, Martijn Figee, P Richard Schuurman, Anja Lok, Damiaan Denys
BACKGROUND: Thirty percent of patients with treatment-resistant depression (TRD) attempt suicide at least once during their lifetime. However, it is unclear what the attempted and completed suicide incidences are in TRD patients after initiating a treatment, and whether specific treatments increase or decrease these incidences. METHODS: We searched PubMed systematically for studies of depressed patients who failed at least two antidepressant therapies and were followed for at least three months after initiating a treatment...
April 3, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29664467/a-prototypic-small-molecule-database-for-bronchoalveolar-lavage-based-metabolomics
#13
Scott Walmsley, Charmion Cruickshank-Quinn, Kevin Quinn, Xing Zhang, Irina Petrache, Russell P Bowler, Richard Reisdorph, Nichole Reisdorph
The analysis of bronchoalveolar lavage fluid (BALF) using mass spectrometry-based metabolomics can provide insight into lung diseases, such as asthma. However, the important step of compound identification is hindered by the lack of a small molecule database that is specific for BALF. Here we describe prototypic, small molecule databases derived from human BALF samples (n=117). Human BALF was extracted into lipid and aqueous fractions and analyzed using liquid chromatography mass spectrometry. Following filtering to reduce contaminants and artifacts, the resulting BALF databases (BALF-DBs) contain 11,736 lipid and 658 aqueous compounds...
April 17, 2018: Scientific Data
https://www.readbyqxmd.com/read/29661966/pallidal-deep-brain-stimulation-disrupts-pallidal-beta-oscillations-and-coherence-with-primary-motor-cortex-in-parkinson-s-disease
#14
Doris D Wang, Coralie de Hemptinne, Svjetlana Miocinovic, Jill L Ostrem, Nicholas B Galifianakis, Marta San Luciano, Philip A Starr
In Parkinson's disease (PD), subthalamic nucleus beta band oscillations are decreased by therapeutic deep brain stimulation (DBS) and this has been proposed as important to the mechanism of therapy. The globus pallidus is a common alternative target for PD with similar motor benefits as subthalamic DBS, but effects of pallidal stimulation in PD are not well studied, and effects of pallidal DBS on cortical function in PD are unknown. Here, in 20 PD and 14 isolated dystonia human patients of both genders undergoing pallidal DBS lead implantation, we recorded local field potentials (LFPs) from the globus pallidus and in a subset of these, recorded simultaneous sensorimotor cortex electrocorticography (ECoG) potentials...
April 16, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29659574/the-impact-of-school-water-sanitation-and-hygiene-improvements-on-infectious-disease-using-serum-antibody-detection
#15
Anna N Chard, Victoria Trinies, Delynn M Moss, Howard H Chang, Seydou Doumbia, Patrick J Lammie, Matthew C Freeman
BACKGROUND: Evidence from recent studies assessing the impact of school water, sanitation and hygiene (WASH) interventions on child health has been mixed. Self-reports of disease are subject to bias, and few WASH impact evaluations employ objective health measures to assess reductions in disease and exposure to pathogens. We utilized antibody responses from dried blood spots (DBS) to measure the impact of a school WASH intervention on infectious disease among pupils in Mali. METHODOLOGY/PRINCIPAL FINDINGS: We randomly selected 21 beneficiary primary schools and their 21 matched comparison schools participating in a matched-control trial of a comprehensive school-based WASH intervention in Mali...
April 16, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29659494/deep-brain-stimulation-of-the-subthalamic-nucleus-in-patients-with-parkinson-disease-with-prior-pallidotomy-or-thalamotomy
#16
Elena A Khabarova, Natalia P Denisova, Aleksandr B Dmitriev, Konstantin V Slavin, Leo Verhagen Metman
Objective. To evaluate the efficacy of deep brain stimulation of the subthalamic nucleus (STN DBS) in patients with Parkinson disease (PD) who previously underwent lesioning of the basal ganglia. Material and methods. The study included 22 patients who underwent STN DBS. Eleven patients had undergone prior unilateral pallidotomy ( n = 6) or VL/VIM thalamotomy ( n = 5) while the other 11 patients had not. The primary outcome was the change from baseline in the motor subscore of the Unified Parkinson Disease Rating Scale (UPDRS-III) 12 months after STN DBS...
April 16, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29657957/the-effect-of-deep-brain-stimulation-therapy-on-fear-related-capture-of-attention-in-parkinson-s-disease-and-essential-tremor-a-comparison-to-healthy-individuals
#17
Corrie R Camalier, Maureen McHugo, David H Zald, Joseph S Neimat
In addition to motor symptoms, Parkinson's disease (PD) involves significant non-motor sequelae, including disruptions in cognitive and emotional processing. Fear recognition appears to be affected both by the course of the disease and by a common interventional therapy, deep brain stimulation of the subthalamic nucleus (STN-DBS). Here, we examined if these effects extend to other aspects of emotional processing, such as attentional capture by negative emotional stimuli. Performance on an emotional attentional blink (EAB) paradigm, a common paradigm used to study emotional capture of attention, was examined in a cohort of individuals with PD, both on and off STN-DBS therapy (n=20)...
2018: Journal of Neurological Disorders
https://www.readbyqxmd.com/read/29657181/a-personal-narrative-on-living-and-dealing-with-psychiatric-symptoms-after-dbs-surgery
#18
Frédéricand Gilbert, John Noel Viaña
Although deep brain stimulation (DBS) may result in dramatic motor improvement in people with Parkinson's disease (PD), it has been correlated with a number of postoperative psychiatric side effects. We report a case of a person with PD experiencing depression and hypomania following DBS surgery. We provide a detailed report of the patient's personal experiences dealing with and managing these psychiatric side effects for three years. Providing a personal narrative focusing on detailed patient subjective experiences complements reports that give insight into the short- and long-term effects of DBS on established psychiatric measures and neurologic activity...
2018: Narrative Inquiry in Bioethics
https://www.readbyqxmd.com/read/29655587/short-term-quality-of-life-after-subthalamic-stimulation-depends-on-non-motor-symptoms-in-parkinson-s-disease
#19
Haidar Salimi Dafsari, Luisa Weiß, Monty Silverdale, Alexandra Rizos, Prashanth Reddy, Keyoumars Ashkan, Julian Evans, Paul Reker, Jan Niklas Petry-Schmelzer, Michael Samuel, Veerle Visser-Vandewalle, Angelo Antonini, Pablo Martinez-Martin, K Ray-Chaudhuri, Lars Timmermann
BACKGROUND: Subthalamic nucleus (STN) deep brain stimulation (DBS) improves quality of life (QoL), motor, and non-motor symptoms (NMS) in advanced Parkinson's disease (PD). However, considerable inter-individual variability has been observed for QoL outcome. HYPOTHESIS: We hypothesized that demographic and preoperative NMS characteristics can predict postoperative QoL outcome. METHODS: In this ongoing, prospective, multicenter study (Cologne, Manchester, London) including 88 patients, we collected the following scales preoperatively and on follow-up 6 months postoperatively: PDQuestionnaire-8 (PDQ-8), NMSScale (NMSS), NMSQuestionnaire (NMSQ), Scales for Outcomes in PD (SCOPA)-motor examination, -complications, and -activities of daily living, levodopa equivalent daily dose...
February 24, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29655586/non-motor-outcomes-of-subthalamic-stimulation-in-parkinson-s-disease-depend-on-location-of-active-contacts
#20
Haidar Salimi Dafsari, Jan Niklas Petry-Schmelzer, K Ray-Chaudhuri, Keyoumars Ashkan, Luca Weis, Till A Dembek, Michael Samuel, Alexandra Rizos, Monty Silverdale, Michael T Barbe, Gereon R Fink, Julian Evans, Pablo Martinez-Martin, Angelo Antonini, Veerle Visser-Vandewalle, Lars Timmermann
BACKGROUND: Subthalamic nucleus (STN) deep brain stimulation (DBS) improves quality of life (QoL), motor, and non-motor symptoms (NMS) in Parkinson's disease (PD). Few studies have investigated the influence of the location of neurostimulation on NMS. OBJECTIVE: To investigate the impact of active contact location on NMS in STN-DBS in PD. METHODS: In this prospective, open-label, multicenter study including 50 PD patients undergoing bilateral STN-DBS, we collected NMSScale (NMSS), NMSQuestionnaire (NMSQ), Hospital Anxiety and Depression Scale (anxiety/depression, HADS-A/-D), PDQuestionnaire-8 (PDQ-8), Scales for Outcomes in PD-motor examination, motor complications, activities of daily living (ADL), and levodopa equivalent daily dose (LEDD) preoperatively and at 6 months follow-up...
March 16, 2018: Brain Stimulation
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