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https://www.readbyqxmd.com/read/29793077/fmri-classification-method-with-multiple-feature-fusion-based-on-minimum-spanning-tree-analysis
#1
Hao Guo, Pengpeng Yan, Chen Cheng, Yao Li, Junjie Chen, Yong Xu, Jie Xiang
Resting state functional brain networks have been widely studied in brain disease research. Conventional network analysis methods are hampered by differences in network size, density and normalization. Minimum spanning tree (MST) analysis has been recently suggested to ameliorate these limitations. Moreover, common MST analysis methods involve calculating quantifiable attributes and selecting these attributes as features in the classification. However, a disadvantage of these methods is that information about the topology of the network is not fully considered, limiting further improvement of classification performance...
May 21, 2018: Psychiatry research. Neuroimaging
https://www.readbyqxmd.com/read/29788902/dystonia-deafness-syndrome-caused-by-actb-p-arg183trp-heterozygosity-shows-striatal-dopaminergic-dysfunction-and-response-to-pallidal-stimulation
#2
Inger Marie Skogseid, Oddveig Røsby, Ane Konglund, James P Connelly, Bård Nedregaard, Greg Eigner Jablonski, Nadja Kvernmo, Asbjørg Stray-Pedersen, Joel C Glover
BACKGROUND: Dystonia-deafness syndrome is a well-known clinical entity, with sensorineural deafness typically manifesting earlier than dystonia. ACTB p.Arg183Trp heterozygosity has been reported in six patients to cause combined infant-onset deafness and dystonia manifesting in adolescence or young adulthood. Three of these have received beneficial pallidal stimulation. Brain imaging to assess striatal function has not been reported previously, however. Nor has a comprehensive hypothesis been presented for how the pleiotropic manifestations of this specific beta-actin gene mutation originate developmentally...
May 22, 2018: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/29761336/-syncope-in-children-and-adolescents
#3
REVIEW
Matthias J Müller, Thomas Paul
Syncope is common in children and adolescents. Neurally mediated syncope including pallid and cyanotic breath holding spells, vagovasal syncope and neurocardiogenic syncope is based on a common pathomechanism and accounts for approximately 75% of cases. A potentially life-threatening cardiac cause of syncope may be present in up to 6%. Detailed history, physical examination and 12-lead electrocardiogram (ECG) allow discrimination between benign and serious syncope in the majority of pediatric patients. Tilt-testing can be useful when diagnosis is unclear...
May 14, 2018: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29747708/efficacy-of-treatment-with-belladonna-in-children-with-severe-pallid-breath-holding-spells
#4
M Cecilia Gonzalez Corcia, Adrien Bottosso, Isabelle Loeckx, Françoise Mascart, Guy Dembour, Geneviève François
IntroductionPallid breath-holding spells are common and dramatic forms of recurrent syncope in infancy. They are very stressful despite their harmless nature and sometimes require treatment. OBJECTIVE: The objective of this study was to evaluate the efficacy of belladonna in severe breath-holding spells. METHODS: This is a multicentric, retrospective series involving 84 children with severe pallid breath-holding spells. Inclusion criteria were >1 pallid breath-holding spell with loss of consciousness, paediatric cardiology evaluation, and follow-up >6 months...
May 11, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29742425/gat-3-dysfunction-generates-tonic-inhibition-in-external-globus-pallidus-neurons-in-parkinsonian-rodents
#5
Marine Chazalon, Elena Paredes-Rodriguez, Stéphanie Morin, Audrey Martinez, Sofia Cristóvão-Ferreira, Sandra Vaz, Ana Sebastiao, Aude Panatier, Eric Boué-Grabot, Cristina Miguelez, Jérôme Baufreton
The external globus pallidus (GP) is a key GABAergic hub in the basal ganglia (BG) circuitry, a neuronal network involved in motor control. In Parkinson's disease (PD), the rate and pattern of activity of GP neurons are profoundly altered and contribute to the motor symptoms of the disease. In rodent models of PD, the striato-pallidal pathway is hyperactive, and extracellular GABA concentrations are abnormally elevated in the GP, supporting the hypothesis of an alteration of neuronal and/or glial clearance of GABA...
May 8, 2018: Cell Reports
https://www.readbyqxmd.com/read/29739345/atypical-central-retinal-artery-occlusion-as-the-first-presentation-of-poems-syndrome-a-case-report
#6
Panitha Jindahra, Charungthai Dejthevaporn, Pimjai Niparuck, Jariya Waisayarat, Piyaphon Cheecharoen, Thanatporn Threetong, Purit Petpiroon, Tharikarn Sujirakul, Anuchit Poonyathalang, Kavin Vanikieti
BACKGROUND: POEMS syndrome is a plasma cell disorder, which clinically manifests from paraneoplastic syndrome: polyneuropathy, organomegaly, endocrinopathy, monoclonal plasma cell disorder, and skin changes. The most common ocular manifestation is optic disc swelling, whereas other ocular manifestations; cystoid macular edema, serous macular detachment, venous sinus thrombosis, infiltrative orbitopathy, uveitis, neovascularization of the disc, peripapillary choroidal neovascularization and optic disc drusen, had also been reported...
May 8, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29725840/pallidal-deep-brain-stimulation-in-juvenile-huntington-s-disease-local-field-potential-oscillations-and-clinical-data
#7
Stefano Ferrea, Stefan J Groiss, Saskia Elben, Christian J Hartmann, Steve B Dunnett, Anne Rosser, Carsten Saft, Alfons Schnitzler, Jan Vesper, Lars Wojtecki
BACKGROUND: Recently, therapeutic attempts to control motor choreatic hyperkinesia of Huntington's disease (HD) by means of pallidal deep brain stimulation (Gp-DBS) were successful. With respect to the clinical effects of Gp-DBS in juvenile hypokinetic-rigid HD (jHD; Westphal variant), only one single-case has been reported up to date. Oscillatory patterns of the Gp in jHD are not known. OBJECTIVES AND METHODS: This work aimed to analyse pallidal local field potential oscillations (LFP) in two patients with jHD treated with Gp-DBS...
May 3, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29713577/subthalamic-and-pallidal-deep-brain-stimulation-for-parkinson-s-disease
#8
REVIEW
Ahmed Negida, Mohamed Elminawy, Gehad El Ashal, Ahmed Essam, Athar Eysa, Mohamed Abd Elalem Aziz
Deep brain stimulation (DBS) is a surgical treatment in which stimulation electrodes are permanently implanted in basal ganglia to treat motor fluctuations and symptoms of Parkinson's disease (PD). Subthalamic nucleus (STN) and globus pallidus internus (GPi) are the commonly used targets for DBS in PD. Many studies have compared motor and non-motor outcomes of DBS in both targets. However, the selection of PD patients for DBS targets is still poorly studied. Therefore, we performed this narrative review to summarize published studies comparing STN DBS and GPi DBS...
February 26, 2018: Curēus
https://www.readbyqxmd.com/read/29700637/lateral-preoptic-and-ventral-pallidal-roles-in-locomotion-and-other-movements
#9
Suriya Subramanian, Rhett A Reichard, Hunter S Stevenson, Zachary M Schwartz, Kenneth P Parsley, Daniel S Zahm
The lateral preoptic area (LPO) and ventral pallidum (VP) are structurally and functionally distinct territories in the subcommissural basal forebrain. It was recently shown that unilateral infusion of the GABAA receptor antagonist, bicuculline, into the LPO strongly invigorates exploratory locomotion, whereas bicuculline infused unilaterally into the VP has a negligible locomotor effect, but when infused bilaterally, produces vigorous, abnormal pivoting and gnawing movements and compulsive ingestion. This study was done to further characterize these responses...
April 26, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29661966/pallidal-deep-brain-stimulation-disrupts-pallidal-beta-oscillations-and-coherence-with-primary-motor-cortex-in-parkinson-s-disease
#10
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/29661126/gnao1-mutation-induced-pediatric-dystonic-storm-rescue-with-pallidal-deep-brain-stimulation
#11
C Michael Honey, Armaan K Malhotra, Maja Tarailo-Graovac, Clara D M van Karnebeek, Gabriella Horvath, Adi Sulistyanto
Dystonic storm or status dystonicus is a life-threatening hyperkinetic movement disorder with biochemical alterations due to the excessive muscle contractions. The medical management can require pediatric intensive care unit admission and a combination of medications while the underlying trigger is managed. Severe cases may require general anesthesia and paralytic agents with intubation and may relapse when these drugs are weaned. Deep brain stimulation of the globus pallidum has been reported to terminate dystonic storm in several pediatric cases...
May 2018: Journal of Child Neurology
https://www.readbyqxmd.com/read/29618268/reporting-on-suicide-between-1819-and-1944
#12
Florian Arendt
BACKGROUND: Suicide rates increased substantially in many countries during the 19th century. Little is known about news coverage on suicide in this period and its relationship to suicide rates. AIMS: To test whether there was a covariation between the quantity of reporting and suicide rates and whether the press relied on sensational reporting. METHOD: A content analysis of Austrian news coverage between 1819 and 1944 was conducted and compared with contemporary findings...
April 5, 2018: Crisis
https://www.readbyqxmd.com/read/29582587/disrupted-striatal-neuron-inputs-and-outputs-in-huntington-s-disease
#13
REVIEW
Anton Reiner, Yun-Ping Deng
Huntington's disease (HD) is a hereditary progressive neurodegenerative disorder caused by a CAG repeat expansion in the gene coding for the protein huntingtin, resulting in a pathogenic expansion of the polyglutamine tract in the N-terminus of this protein. The HD pathology resulting from the mutation is most prominent in the striatal part of the basal ganglia, and progressive differential dysfunction and loss of striatal projection neurons and interneurons account for the progression of motor deficits seen in this disease...
April 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29576500/dualistic-effect-of-pallidal-deep-brain-stimulation-on-motor-speech-disorders-in-dystonia
#14
Jan Rusz, Tereza Tykalová, Anna Fečíková, Daniela Šťastná, Dušan Urgošík, Robert Jech
BACKGROUND: Although pallidal deep brain stimulation (GPi-DBS) is an effective treatment for dystonia, it may cause important stimulation-induced side-effects such as hypokinetic dysarthria or stuttering. However, the reasons behind the occurrence of these side-effects remain unknown. OBJECTIVE: To objectively investigate the impact of GPi-DBS on patients with dystonia on speech fluency, intelligibility, and key aspects of hyperkinetic and hypokinetic dysarthria...
March 15, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29569008/dopamine-receptors-in-the-rat-entopeduncular-nucleus
#15
Hagar Lavian, Yocheved Loewenstern, Ravit Madar, Mara Almog, Izhar Bar-Gad, Eitan Okun, Alon Korngreen
Dopamine is critical for the normal functioning of the basal ganglia, modulating both input and output nuclei of this system. The distribution and function of each of the five dopamine receptor subtypes have been studied extensively in the striatum. However, the role of extrastriatal dopamine receptors in basal ganglia information processing is less clear. Here, we studied the anatomical distribution of dopamine receptors in one of the output nuclei of the rodent basal ganglia, the entopeduncular nucleus (EP)...
March 22, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29565248/ventral-pallidal-encoding-of-reward-seeking-behavior-depends-on-the-underlying-associative-structure
#16
Jocelyn M Richard, Nakura Stout, Deanna Acs, Patricia H Janak
Despite its being historically conceptualized as a motor expression site, emerging evidence suggests the ventral pallidum (VP) plays a more active role in integrating information to generate motivation. Here, we investigated whether rat VP cue responses would encode and contribute similarly to the vigor of reward-seeking behaviors trained under Pavlovian versus instrumental contingencies, when these behavioral responses consist of superficially similar locomotor response patterns but may reflect distinct underlying decision-making processes...
March 22, 2018: ELife
https://www.readbyqxmd.com/read/29538685/congress-of-neurological-surgeons-systematic-review-and-evidence-based-guideline-on-subthalamic-nucleus-and-globus-pallidus-internus-deep-brain-stimulation-for-the-treatment-of-patients-with-parkinson-s-disease-executive-summary
#17
Anand Rughani, Jason M Schwalb, Christos Sidiropoulos, Julie Pilitsis, Adolfo Ramirez-Zamora, Jennifer A Sweet, Sandeep Mittal, Alberto J Espay, Jorge Gonzalez Martinez, Aviva Abosch, Emad Eskandar, Robert Gross, Ron Alterman, Clement Hamani
QUESTION 1: Is bilateral subthalamic nucleus deep brain stimulation (STN DBS) more, less, or as effective as bilateral globus pallidus internus deep brain stimulation (GPi DBS) in treating motor symptoms of Parkinson's disease, as measured by improvements in Unified Parkinson's Disease Rating Scale, part III (UPDRS-III) scores? RECOMMENDATION: Given that bilateral STN DBS is at least as effective as bilateral GPi DBS in treating motor symptoms of Parkinson's disease (as measured by improvements in UPDRS-III scores), consideration can be given to the selection of either target in patients undergoing surgery to treat motor symptoms...
June 1, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29527566/dopamine-d2-receptors-in-dopaminergic-neurons-modulate-performance-in-a-reversal-learning-task-in-mice
#18
Jérôme Linden, Alexander S James, Colin McDaniel, J David Jentsch
Neuroimaging studies in animal models and human subjects have each revealed that relatively low striatal dopamine D2-like receptor binding potential is associated with poor impulse control and with vulnerability for addiction-related behaviors. These studies cannot, however, disambiguate the roles for various pools of D2 receptors found in the striatum (e.g., those expressed on medium spiny striato-pallidal neurons vs on dopamine-releasing nerve terminals) in these behavioral outcomes. To clarify the role of the latter pool, namely, D2 autoreceptors, we studied mice carrying a conditional DRD2 gene, with or without Cre-recombinase expressed under the transcriptional control of the dopamine transporter gene locus (autoDrd2-KO, n = 19 and controls, n = 21)...
January 2018: ENeuro
https://www.readbyqxmd.com/read/29520331/reversal-of-status-dystonicus-after-relocation-of-pallidal-electrodes-in-dyt6-generalized-dystonia
#19
D L Marinus Oterdoom, Martje E van Egmond, Luisa Cassini Ascencao, J Marc C van Dijk, Assel Saryyeva, Martijn Beudel, Joachim Runge, Tom J de Koning, Mahmoud Abdallat, Hendriekje Eggink, Marina A J Tijssen, Joachim K Krauss
Background: DYT6 dystonia can have an unpredictable clinical course and the result of deep brain stimulation (DBS) of the internal part of the globus pallidus (GPi) is known to be less robust than in other forms of autosomal dominant dystonia. Patients who had previous stereotactic surgery with insufficient clinical benefit form a particular challenge with very limited other treatment options available. Case Report: A pediatric DYT6 patient unexpectedly deteriorated to status dystonicus 1 year after GPi DBS implantation with good initial clinical response...
2018: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/29503156/pallidal-dopaminergic-denervation-and-rest-tremor-in-early-parkinson-s-disease-ppmi-cohort-analysis
#20
Jee-Young Lee, Nicholas P Lao-Kaim, Jacopo Pasquini, Günther Deuschl, Nicola Pavese, Paola Piccini
BACKGROUND: s: Over recent years there have been some conflicting reports upon the role of pallidal dopaminergic denervation in rest tremor in Parkinson's disease. OBJECTIVES: To clarify this issue we analyzed the clinical and 123I-FP-CIT SPECT data of a large cohort of early Parkinson's disease patients enrolled in the PPMI study. METHODS: Pallidal and striatal dopamine transporter uptake ratios were calculated in 382 patients (120 no-tremor, 60 tremor-dominant, and 202 indeterminate) and 150 controls...
February 24, 2018: Parkinsonism & related Disorders
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