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https://www.readbyqxmd.com/read/29346639/comparison-of-dopamine-d3-and-d2-receptor-occupancies-by-a-single-dose-of-blonanserin-in-healthy-subjects-a-positron-emission-tomography-study-with-11c-phno
#1
Amane Tateno, Takeshi Sakayori, Woo-Chan Kim, Kazuyoshi Honjo, Haruo Nakayama, Ryosuke Arakawa, Yoshiro Okubo
Background: Blockade of D3 receptor, a member of the dopamine D2-like receptor family, has been suggested as a possible medication for schizophrenia. Blonanserin has high affinity in vitro for D3 as well as D2 receptors. We investigated whether a single dose of 12 mg blonanserin, which was within the daily clinical dose range (i.e., 8-24 mg) for the treatment of schizophrenia, occupies D3 as well as D2 receptors in healthy subjects. Methods: Six healthy males (mean 35...
January 13, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29340590/efficacy-and-safety-of-deep-brain-stimulation-in-tourette-syndrome-the-international-tourette-syndrome-deep-brain-stimulation-public-database-and-registry
#2
Daniel Martinez-Ramirez, Joohi Jimenez-Shahed, James Frederick Leckman, Mauro Porta, Domenico Servello, Fan-Gang Meng, Jens Kuhn, Daniel Huys, Juan Carlos Baldermann, Thomas Foltynie, Marwan I Hariz, Eileen M Joyce, Ludvic Zrinzo, Zinovia Kefalopoulou, Peter Silburn, Terry Coyne, Alon Y Mogilner, Michael H Pourfar, Suketu M Khandhar, Man Auyeung, Jill Louise Ostrem, Veerle Visser-Vandewalle, Marie-Laure Welter, Luc Mallet, Carine Karachi, Jean Luc Houeto, Bryan Timothy Klassen, Linda Ackermans, Takanobu Kaido, Yasin Temel, Robert E Gross, Harrison C Walker, Andres M Lozano, Benjamin L Walter, Zoltan Mari, William S Anderson, Barbara Kelly Changizi, Elena Moro, Sarah Elizabeth Zauber, Lauren E Schrock, Jian-Guo Zhang, Wei Hu, Kyle Rizer, Erin H Monari, Kelly D Foote, Irene A Malaty, Wissam Deeb, Aysegul Gunduz, Michael S Okun
Importance: Collective evidence has strongly suggested that deep brain stimulation (DBS) is a promising therapy for Tourette syndrome. Objective: To assess the efficacy and safety of DBS in a multinational cohort of patients with Tourette syndrome. Design, Setting, and Participants: The prospective International Deep Brain Stimulation Database and Registry included 185 patients with medically refractory Tourette syndrome who underwent DBS implantation from January 1, 2012, to December 31, 2016, at 31 institutions in 10 countries worldwide...
January 16, 2018: JAMA Neurology
https://www.readbyqxmd.com/read/29332085/deep-brain-stimulation-of-the-subthalamic-nucleus-and-globus-pallidus-for-parkinson-s-disease
#3
Philip S Lee, Donald J Crammond, R Mark Richardson
The concept of deep brain stimulation (DBS) for Parkinson's disease (PD) was introduced over 20 years ago, but our understanding of the nuances of this procedure continues to improve. The average motor outcomes of internal segment of the globus pallidus (GPi) and subthalamic nucleus (STN) DBS appear to be similar, although GPi DBS may allow greater recovery of verbal fluency and may provide greater relief of depression symptoms and improvement in the quality of life, and STN DBS appears more likely to result in decrease in levodopa equivalent doses...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29330326/loss-of-balance-between-striatal-feedforward-inhibition-and-corticostriatal-excitation-leads-to-tremor
#4
Yael Oran, Izhar Bar-Gad
Fast spiking interneurons (FSIs) exert powerful inhibitory control over the striatum and are hypothesized to balance the massive excitatory cortical and thalamic input to this structure. We recorded neuronal activity in the dorsolateral striatum and globus pallidus (GP) concurrently with the detailed movement kinematics of freely behaving female rats prior to and following selective inhibition of FSI activity using IEM-1460 microinjections. The inhibition led to the appearance of episodic rest tremor in the body part that depended on the somatotopic location of the injection within the striatum...
January 12, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29327493/a-prospective-cohort-study-of-122-adult-patients-presenting-to-an-otolaryngologist-s-office-with-globus-pharyngeus
#5
Eva Rye Rasmussen, Didde Traerup Schnack, Andreas Tomaas Ravn
OBJECTIVES: To investigate the epidemiology of globus pharyngeus in adult patients presenting to the otolaryngologist's office. Also the predictors of persisting symptoms, prevalence of anxiety and the effect of clinical assessment were analyzed. DESIGN: This was a prospective cohort study. Follow-up was done using a postal questionnaire. SETTING: One otolaryngologists' office comprising three medical doctors. PARTICIPANTS: 122 consecutive globus patients presenting to one otolaryngology office in a one-year period...
January 11, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29326290/functional-lesional-neurosurgery-for-tremor-a-systematic-review-and-meta-analysis
#6
REVIEW
Sebastian R Schreglmann, Joachim K Krauss, Jin Woo Chang, Kailash P Bhatia, Georg Kägi
BACKGROUND: This work evaluates the consistency, effect size and incidence of persistent side effects of lesional neurosurgical interventions in the treatment of tremor due to Parkinson's disease (PD), essential tremor (ET), multiple sclerosis (MS) and midbrain lesions. METHODS: Systematic review and meta-analysis according to PRISMA-P guidelines. Random effects meta-analysis of standardised mean difference based on a peer-reviewed protocol (PROSPERO no. CRD42016048049)...
January 11, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29324910/deep-brain-nucleus-targeting-in-parkinson-s-disease-and-essential-tremor-by-image-guided-surgery-using-neuronavigation-system-with-tractography-and-volume-of-tissue-of-activated-assessment
#7
Amir Nikouei, Pooya Torkian, Tohid Emami Meybodi, Arash Javad Mousavi, Amir Saied Seddighi
OBJECTIVE: Deep Brain Stimulation (DBS) is an effective surgical approach for treatment of Parkinson's disease (PD), dystonia and essential tremor (ET). Traditionally, DBS is performed using frame-based stereotactic technique. Recently, image guided surgery (IGS) using neuronavigation has gained popularity in neurosurgical procedures. We aim to investigate whether DBS using neuronavigation is capable of improving patient's outcome and minimize its complications. SUBJECT AND METHODS: From February 2011 to October 2016, 20 patients with PD and 6 patients with ET were enrolled in the study...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29319556/gadolinium-accumulation-in-the-deep-cerebellar-nuclei-and-globus-pallidus-after-exposure-to-linear-but-not-macrocyclic-gadolinium-based-contrast-agents-in-a-retrospective-pig-study-with-high-similarity-to-clinical-conditions
#8
Janina Boyken, Thomas Frenzel, Jessica Lohrke, Gregor Jost, Hubertus Pietsch
OBJECTIVE: The aim of this retrospective study was to determine the gadolinium (Gd) concentration in different brain areas in a pig cohort that received repeated administration of Gd-based contrast agents (GBCAs) at standard doses over several years, comparable with a clinical setting. MATERIAL AND METHODS: Brain tissue was collected from 13 Göttingen mini pigs that had received repeated intravenous injections of gadopentetate dimeglumine (Gd-DTPA; Magnevist) and/or gadobutrol (Gadovist)...
January 9, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29317603/subcortical-association-with-memory-performance-in-schizophrenia-a-structural-magnetic-resonance-imaging-study
#9
Daisuke Koshiyama, Masaki Fukunaga, Naohiro Okada, Fumio Yamashita, Hidenaga Yamamori, Yuka Yasuda, Michiko Fujimoto, Kazutaka Ohi, Haruo Fujino, Yoshiyuki Watanabe, Kiyoto Kasai, Ryota Hashimoto
Memory performance is severely impaired in individuals with schizophrenia. Although several studies have reported a relationship between memory performance and hippocampal volume, only a few structural magnetic resonance imaging (MRI) studies have investigated the relationship between memory performance and subcortical structures other than hippocampus in patients with schizophrenia. We investigated the relationship between memory performance and subcortical regional volumes in a large sample of patients with schizophrenia...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29314418/cerebral-blood-volume-mapping-with-ferumoxytol-in-dynamic-susceptibility-contrast-perfusion-mri-comparison-to-standard-of-care
#10
Csanad G Varallyay, Eric Nesbit, Andrea Horvath, Peter Varallyay, Rongwei Fu, Seymur Gahramanov, Leslie L Muldoon, Xin Li, William D Rooney, Edward A Neuwelt
BACKGROUND: Cerebral blood volume (CBV) mapping with a dynamic susceptibility contrast (DSC) perfusion technique has become a clinical tool in diagnosing and follow-up of brain tumors. Ferumoxytol, a long-circulating iron oxide nanoparticle, has been tested for CBV mapping, but the optimal dose has not been established. PURPOSE: To compare ferumoxytol DSC of two different doses to standard of care gadoteridol by analyzing time-intensity curves and CBV maps in normal-appearing brain regions...
January 4, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29312473/central-nervous-system-gadolinium-accumulation-in-patients-undergoing-periodical-contrast-mri-screening-for-hereditary-tumor-syndromes
#11
Evelynn Vergauwen, Anne-Marie Vanbinst, Carola Brussaard, Peter Janssens, Dieter De Clerck, Michel Van Lint, Anne C Houtman, Olaf Michel, Kathelijn Keymolen, Bieke Lefevere, Susanne Bohler, Dirk Michielsen, Anna C Jansen, Vera Van Velthoven, Sven Gläsker
Background: Patients with hereditary tumor syndromes undergo periodical magnetic resonance imaging (MRI) screening with Gadolinium contrast. Gadolinium accumulation has recently been described in the central nervous system after repeated administrations. The prevalence and rate of accumulation in different subgroups of patients are unknown. Neither are the mechanism nor clinical impact. This may cause uncertainty about the screening. To explore the prevalence and rate of Gadolinium accumulation in different subgroups, we retrospectively analyzed MRIs of patients with von Hippel-Lindau disease (VHL) and Tuberous Sclerosis Complex (TSC)...
2018: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/29300210/pediatric-brain-gadolinium-deposition-in-dentate-nucleus-and-globus-pallidus-on-unenhanced-t1-weighted-images-is-dependent-on-the-type-of-contrast-agent
#12
Young Jin Ryu, Young Hun Choi, Jung-Eun Cheon, Woo-Jin Lee, Subin Park, Ji Eun Park, Woo Sun Kim, In-One Kim
PURPOSE: The aim of this study was to identify the signal intensity (SI) changes in the dentate nucleus (DN) and the globus pallidus (GP) on unenhanced T1-weighted magnetic resonance (MR) images after multiple administration of gadolinium-based contrast agents (GBCAs) in children and compare those changes between linear and macrocyclic GBCAs. MATERIALS AND METHODS: This retrospective study was approved by the institutional review board and the requirement for informed consent was waived...
January 2, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29297155/brain-iron-deposition-in-type-2-diabetes-mellitus-with-and-without-mild-cognitive-impairment-an-in-vivo-susceptibility-mapping-study
#13
Qifang Yang, Lina Zhou, Chen Liu, Daihong Liu, Yang Zhang, Chang Li, Yongning Shang, Xin Wei, Chuanming Li, Jian Wang
This study was performed to investigate iron deposition in the brain of type 2 diabetes mellitus (T2DM) patients using quantitative susceptibility mapping (QSM) and the associated cognitive impairments. Sixty patients diagnosed with T2DM were subjected to neuropsychological tests to determine their cognitive status, and the results were used to subdivide the patients into a T2DM without mild cognitive impairment (MCI) group (n = 30) and a T2DM with MCI group (n = 30). All patients underwent high-resolution susceptibility-weighted imaging, and data processing was performed using SMART (Susceptibility Mapping and Phase Artifacts Removal Toolbox) software...
January 3, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29296614/neuropathology-of-childhood-onset-basal-ganglia-degeneration-caused-by-mutation-of-vac14
#14
Chloe Stutterd, Peter Diakumis, Melanie Bahlo, Miriam Fanjul Fernandez, Richard J Leventer, Martin Delatycki, David Amor, Chung W Chow, Sarah Stephenson, Miriam H Meisler, Catriona Mclean, Paul J Lockhart
Objective: To characterize the clinical features and neuropathology associated with recessive VAC14 mutations. Methods: Whole-exome sequencing was used to identify the genetic etiology of a rapidly progressive neurological disease presenting in early childhood in two deceased siblings with distinct neuropathological features on post mortem examination. Results: We identified compound heterozygous variants in VAC14 in two deceased siblings with early childhood onset of severe, progressive dystonia, and neurodegeneration...
December 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29288993/chronic-deep-brain-stimulation-normalizes-scalp-eeg-activity-in-isolated-dystonia
#15
Svjetlana Miocinovic, Andrew Miller, Nicole C Swann, Jill L Ostrem, Philip A Starr
OBJECTIVE: To investigate cortical activity using scalp EEG in patients with isolated dystonia treated with chronic deep brain stimulation (DBS), on and off stimulation. METHODS: We analyzed 64-channel scalp EEG in 12 isolated dystonia patients treated with chronic DBS (7 generalized, 5 cervical/segmental; 7 globus pallidus (GP), 5 subthalamic nucleus (STN)), and 20 healthy age-matched controls. Recordings during rest and movement task, and clinical motor scores, were collected with DBS-on and during a 90-min DBS washout...
November 26, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29280306/sex-commonalities-and-differences-in-obesity-related-alterations-in-intrinsic-brain-activity-and-connectivity
#16
Arpana Gupta, Emeran A Mayer, Jennifer S Labus, Ravi R Bhatt, Tiffany Ju, Aubrey Love, Amanat Bal, Kirsten Tillisch, Bruce Naliboff, Claudia P Sanmiguel, Lisa A Kilpatrick
OBJECTIVE: This study aimed to characterize obesity-related sex differences in the intrinsic activity and connectivity of the brain's reward networks. METHODS: Eighty-six women (n = 43) and men (n = 43) completed a 10-minute resting functional magnetic resonance imaging scan. Sex differences and commonalities in BMI-related frequency power distribution and reward seed-based connectivity were investigated by using partial least squares analysis. RESULTS: For whole-brain activity in both men and women, increased BMI was associated with increased slow-5 activity in the left globus pallidus (GP) and substantia nigra...
December 27, 2017: Obesity
https://www.readbyqxmd.com/read/29277088/-belching
#17
REVIEW
Yu Kyung Cho
Supragastric belching is the most important factor in the etiology of excessive belching complaints. Supragastric belching is a belching disorder with a behavioral origin. The standard diagnosis is made by monitoring the esophageal impedance. Supragastric belching has been shown to be associated with globus, as well as reflux symptoms in proton pump inhibitor non-responders in gastroesophageal reflux disease; however, the pathophysiology of supragastric belching in patients with gastroesophageal reflux disease or functional dyspepsia has not been clarified...
December 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29260010/musical-visual-and-cognitive-deficits-after-middle-cerebral-artery-infarction
#18
Stephanie Rosemann, Freimuth Brunner, Andreas Kastrup, Manfred Fahle
The perception of music can be impaired after a stroke. This dysfunction is called amusia and amusia patients often also show deficits in visual abilities, language, memory, learning, and attention. The current study investigated whether deficits in music perception are selective for musical input or generalize to other perceptual abilities. Additionally, we tested the hypothesis that deficits in working memory or attention account for impairments in music perception. Twenty stroke patients with small infarctions in the supply area of the middle cerebral artery were investigated with tests for music and visual perception, categorization, neglect, working memory and attention...
March 2017: ENeurologicalSci
https://www.readbyqxmd.com/read/29251804/a-study-of-neurite-orientation-dispersion-and-density-imaging-in-wilson-s-disease
#19
Yu-Kun Song, Xin-Bei Li, Xiao-Long Huang, Jing Zhao, Xiang-Xue Zhou, Yu-Liang Wang, Xu Yan, Jing-Yan Wang, Jian-Ping Chu
BACKGROUND: Previous studies have indicated that neurite orientation dispersion and density imaging (NODDI) could be used as a biomarker for detecting microstructural changes of brain. PURPOSE: To quantitatively evaluate the changes in basal ganglia (BG) and thalamus in Wilson's disease (WD) by NODDI and assess the correlation between parameters and disease severity. STUDY TYPE: Prospective case-control study. POPULATION: In total, 24 WD patients and 25 age- and sex-matched normal controls were involved in this study...
December 18, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29249682/deep-brain-stimulation-for-lesion-related-tremors-a-systematic-review-and-meta-analysis
#20
REVIEW
Marcelo D Mendonça, Bruna Meira, Marco Fernandes, Raquel Barbosa, Paulo Bugalho
Deep brain stimulation (DBS) is an effective treatment for essential tremor or tremor in Parkinson's disease. The effectiveness of DBS in reducing tremors that develop after a structural lesion of the central nervous system (such as Holmes' tremor - HT) has only been addressed in case reports or series. We conducted a systematic review of all published original reports of DBS in central nervous system lesion-related tremor (excluding demyelinating disorders due to their non-static nature). Where available, we extracted data regarding each patient's demographic, tremor and surgical details...
December 13, 2017: Parkinsonism & related Disorders
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