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https://www.readbyqxmd.com/read/29326035/myoclonus-in-the-elderly-a-retrospective-analysis-of-clinical-and-electrophysiological-characteristics-of-patients-referred-to-an-electrophysiology-laboratory
#1
Meral E Kiziltan, Aysegul Gunduz, Melih Tutuncu, Sibel Ertan, Hulya Apaydin, Gunes Kiziltan
BACKGROUND AND OBJECTIVE: Late-onset myoclonus in the elderly is mainly related to dementia or systemic disease. In this report, we aimed to investigate the clinical and electrophysiological features of patients with late-onset myoclonus. PATIENTS AND METHOD: We retrospectively assessed the medical records of patients who were referred to our electromyography laboratory. From these records, we included all patients who had myoclonus which started after the age of 60 years and in whom it was confirmed by polymyography...
December 26, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29315470/motor-subtypes-and-other-risk-factors-associated-with-drooling-in-parkinson-s-disease-patients
#2
C J Mao, Y T Xiong, F Wang, Y P Yang, W Yuan, C Zhu, J Chen, C F Liu
OBJECTIVE: To explore the relationship between motor subtypes and drooling, and other risk factors associated with drooling in a large cohort of Chinese patients with Parkinson's disease (PD). METHODS: A total of 586 PD patients were enrolled in this study. Unified Parkinson's disease rating scale (UPDRS) and Hoehn & Yahr stage (H & Y stage) scale, Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), Hamilton Rating Scale for Depression-24 item (HRSD), and Mini-Mental State Examination (MMSE) were applied to all subjects...
January 9, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29310988/an-updated-diagnostic-approach-to-subtype-definition-of-vascular-parkinsonism-recommendations-from-an-expert-working-group
#3
REVIEW
Ivan Rektor, Nicolaas I Bohnen, Amos D Korczyn, Viktoria Gryb, Hrishikesh Kumar, Milica G Kramberger, Frank-Erik de Leeuw, Zvezdan Pirtošek, Irena Rektorová, Ilana Schlesinger, Jaroslaw Slawek, Peter Valkovič, Branislav Veselý
This expert working group report proposes an updated approach to subtype definition of vascular parkinsonism (VaP) based on a review of the existing literature. The persistent lack of consensus on clear terminology and inconsistent conceptual definition of VaP formed the impetus for the current expert recommendation report. The updated diagnostic approach intends to provide a comprehensive tool for clinical practice. The preamble for this initiative is that VaP can be diagnosed in individual patients with possible prognostic and therapeutic consequences and therefore should be recognized as a clinical entity...
December 29, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29259548/differential-effects-of-parkinson-s-disease-on-interneuron-subtypes-within-the-human-anterior-olfactory-nucleus
#4
Isabel Ubeda-Bañon, Alicia Flores-Cuadrado, Daniel Saiz-Sanchez, Alino Martinez-Marcos
Synucleinopathies (including α-synucleinopathies), which include Parkinson's disease (PD), manifest themsevles early on (stage 1) in the olfactory system; preferentially in the anterior olfactory nucleus (AON). In particular, the non-motor, early manifestations of PD include hyposmia, which is the partial loss of the sense of smell. The neural basis of hyposmia in PD, however, is poorly understood; but the AON appears to be a key structure in the disease's progression. We analyzed whether α-synuclein was involved in the differential interneuron vulnerability associated with PD in the retrobulbar, cortical anterior and cortical posterior divisions of the AON...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29236669/-optically-dissecting-brain-nicotinic-receptor-function-with-photo-controllable-designer-receptors
#5
Romain Durand-de Cuttoli, Sarah Mondoloni, Alexandre Mourot
Nicotinic acetylcholine receptors (nAChRs) are pentameric ligand-gated ion channels widely expressed in the central nervous system and the periphery. They play an important modulatory role in learning, memory and attention, and have been implicated in various diseases such as Alzheimer's disease, Parkinson's disease, epilepsy, schizophrenia and addiction. These receptors are activated by the endogenous neurotransmitter acetylcholine, or by nicotine, the alkaloid found in tobacco leaves. Both molecules open the ion channel and cause the movement of cations across the membrane, which directly affects neuronal excitability and synaptic plasticity...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/29233880/autophagy-impairment-in-parkinson-s-disease
#6
REVIEW
Cansu Karabiyik, Min Jae Lee, David C Rubinsztein
Parkinson's disease (PD) is a debilitating movement disorder typically associated with the accumulation of intracytoplasmic aggregate prone protein deposits. Over recent years, increasing evidence has led to the suggestion that the mutations underlying certain forms of PD impair autophagy. Autophagy is a degradative pathway that delivers cytoplasmic content to lysosomes for degradation and represents a major route for degradation of aggregated cellular proteins and dysfunctional organelles. Autophagy up-regulation is a promising therapeutic strategy that is being explored for its potential to protect cells against the toxicity of aggregate-prone proteins in neurodegenerative diseases...
December 12, 2017: Essays in Biochemistry
https://www.readbyqxmd.com/read/29223069/neuropsychological-and-clinical-heterogeneity-of-cognitive-impairment-in-patients-with-multiple-system-atrophy
#7
Lorena Broseghini Barcelos, Flávia Saad, Carla Giacominelli, Roberta Arb Saba, Patrícia Maria de Carvalho Aguiar, Sonia Maria Azevedo Silva, Vanderci Borges, Paulo Henrique Ferreira Bertolucci, Henrique Ballalai Ferraz
OBJECTIVE: We evaluated neuropsychological tests to compare cognitive impairment between two types of multiple system atrophy: predominant parkinsonism (MSA-P) and predominant cerebellar ataxia (MSA-C). PATIENTS AND METHODS: This cross-sectional study included 14 patients diagnosed with MSA: four with MSA-C and ten with MSA-P. Presence of motor symptoms was determined by using the Unified Rating MSA Scale (URMSAS). Non-motor symptoms were evaluated by the Short Form Health Survey (SF-36), Scales for Outcomes in Parkinson's disease Autonomic (SCOPA-AUT), Hospital Anxiety and Depression Scale (HADS), and Beck Depression Inventory (BDI)...
October 31, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29222591/dementia-with-lewy-bodies-and-parkinson-s-disease-dementia-current-concepts-and-controversies
#8
REVIEW
Kurt A Jellinger
Dementia with Lewy bodies (DLB) and Parkinson's disease-dementia (PDD), although sharing many clinical, neurochemical and morphological features, according to DSM-5, are two entities of major neurocognitive disorders with Lewy bodies of unknown etiology. Despite considerable clinical overlap, their diagnosis is based on an arbitrary distinction between the time of onset of motor and cognitive symptoms: dementia often preceding parkinsonism in DLB and onset of cognitive impairment after onset of motor symptoms in PDD...
December 8, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29218916/visage-integrating-external-knowledge-into-electronic-medical-record-visualization
#9
Edward W Huang, Sheng Wang, ChengXiang Zhai
In this paper, we present VisAGE, a method that visualizes electronic medical records (EMRs) in a low-dimensional space. Effective visualization of new patients allows doctors to view similar, previously treated patients and to identify the new patients' disease subtypes, reducing the chance of misdiagnosis. However, EMRs are typically incomplete or fragmented, resulting in patients who are missing many available features being placed near unrelated patients in the visualized space. VisAGE integrates several external data sources to enrich EMR databases to solve this issue...
2018: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/29209182/cognitive-emotional-and-auto-activation-dimensions-of-apathy-in-parkinson-s-disease
#10
REVIEW
Jonathan Del-Monte, Sophie Bayard, Pierluigi Graziani, Marie C Gély-Nargeot
Apathy is one of the most frequent non-motor manifestations in Parkinson's disease (PD) that can lead to a whole range of deleterious outcomes. In 2006, Levy and Dubois proposed a model that distinguishes three different apathy aetiologies in PD divided into three subtypes of disrupted processing: "emotional-affective," "cognitive," and "auto-activation." These three dimensions associated with dopamine depletion present in the pathology would lead to the emergence of apathy in PD. The aim of this mini-review was to describe and discuss studies that have explore links between apathy and the three subtypes of disrupted processing proposed by Levy and Dubois (2006) and as well as the links between these dimensions and dopamine depletion in Parkinson's disease...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29184503/pharmacological-characterization-of-5-substituted-1-2-3-dihydro-1-benzofuran-2-yl-methyl-piperazines-novel-antagonists-for-the-histamine-h3-and-h4-receptors-with-anti-inflammatory-potential
#11
Michelle F Corrêa, Álefe J R Barbosa, Larissa B Teixeira, Diego A Duarte, Sarah C Simões, Lucas T Parreiras-E-Silva, Aleksandro M Balbino, Richardt G Landgraf, Michel Bouvier, Claudio M Costa-Neto, João P S Fernandes
The histamine receptors (HRs) are traditional G protein-coupled receptors of extensive therapeutic interest. Recently, H3R and H4R subtypes have been targeted in drug discovery projects for inflammation, asthma, pain, cancer, Parkinson's, and Alzheimer's diseases, which includes searches for dual acting H3R/H4R ligands. In the present work, nine 1-[(2,3-dihydro-1-benzofuran-2-yl)methyl]piperazine (LINS01 series) molecules were synthesized and evaluated as H3R and H4R ligands. Our data show that the N-allyl-substituted compound LINS01004 bears the highest affinity for H3R (pKi 6...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29177707/a-first-in-man-pet-study-of-18f-pss232-a-fluorinated-abp688-derivative-for-imaging-metabotropic-glutamate-receptor-subtype-5
#12
Geoffrey Warnock, Michael Sommerauer, Linjing Mu, Gloria Pla Gonzalez, Susanne Geistlich, Valerie Treyer, Roger Schibli, Alfred Buck, Stefanie D Krämer, Simon M Ametamey
PURPOSE: Non-invasive imaging of metabotropic glutamate receptor 5 (mGlu5) in the brain using PET is of interest in e.g., anxiety, depression, and Parkinson's disease. Widespread application of the most widely used mGlu5 tracer, [11C]ABP688, is limited by the short physical half-life of carbon-11. [18F]PSS232 is a fluorinated analog with promising preclinical properties and high selectivity and specificity for mGlu5. In this first-in-man study, we evaluated the brain uptake pattern and kinetics of [18F]PSS232 in healthy volunteers...
November 27, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29174817/-bladder-cancer-in-neurogenic-patients-a-retrospective-study-of-management-and-follow-up
#13
P Ali, C Lefevre, B Perrouin-Verbe, L Le Normand, J Rigaud, O Bouchot, A Levesque, M-A Perrouin-Verbe
INTRODUCTION: The prevalence of bladder cancer (BC) in neurological patients seems to be similar to that of the general population. However, they are more aggressive with a higher rate of muscle-invasive forms and squamous cells carcinomas. The aim of the current study was to report etiologies, management and outcomes of BC in neurological population. MATERIAL AND METHOD: Were enrolled all neurological patients with a BC diagnosed between 2004 and 2017. The following data were retrospectively reported: age, gender, duration of the disease, mode of discovery, histological type, treatment and outcomes...
November 22, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/29163141/disrupted-functional-connectivity-of-basal-ganglia-across-tremor-dominant-and-akinetic-rigid-dominant-parkinson-s-disease
#14
Xiaojun Guan, Qiaoling Zeng, Tao Guo, Jiaqiu Wang, Min Xuan, Quanquan Gu, Tao Wang, Peiyu Huang, Xiaojun Xu, Minming Zhang
It is well known that disruption of basal ganglia function generates the motor symptoms in PD, however, these are presented in a heterogeneous manner; patients can be divided into tremor-dominant and akinesia/rigidity-dominant subtypes. To date, it is unknown if these differences in the motor symptoms could be explained by differences on the functional connectivity of basal ganglia with specific brain regions. In this study, we aimed to explore the alterations of the network-based and global functional connectivity linking to basal ganglia between the PD-TD and PD-AR patients...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29138080/muscarinic-receptor-subtype-distribution-in-the-central-nervous-system-and-relevance-to-aging-and-alzheimer-s-disease
#15
REVIEW
E P Lebois, C Thorn, J R Edgerton, M Popiolek, S Xi
Muscarinic acetylcholine receptors (mAChRs) are G proteincoupled receptors (GPCRs) that mediate the metabotropic actions of acetylcholine (ACh). There are five subtypes of mAChR, M1 - M5, which are expressed throughout the central nervous system (CNS) on numerous cell types and represent promising treatment targets for a number of different diseases, disorders, and conditions of the CNS. Although the present review will focus on Alzheimer's disease (AD) and amnestic mild cognitive impairment (aMCI), a number of conditions such as Parkinson's disease (PD), schizophrenia, and others represent significant unmet medical needs for which selective muscarinic agents could offer therapeutic benefits...
November 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29129681/decreased-sirtuin-deacetylase-activity-in-lrrk2-g2019s-ipsc-derived-dopaminergic-neurons
#16
Andrew J Schwab, Samantha L Sison, Michael R Meade, Katarzyna A Broniowska, John A Corbett, Allison D Ebert
Mitochondrial changes have long been implicated in the pathogenesis of Parkinson's disease (PD). The glycine to serine mutation (G2019S) in leucine-rich repeat kinase 2 (LRRK2) is the most common genetic cause for PD and has been shown to impair mitochondrial function and morphology in multiple model systems. We analyzed mitochondrial function in LRRK2 G2019S induced pluripotent stem cell (iPSC)-derived neurons to determine whether the G2019S mutation elicits similar mitochondrial deficits among central and peripheral nervous system neuron subtypes...
October 31, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29120562/be-vigilant-for-dementia-in-parkinson%C3%A2-s-disease
#17
Flavia Niccolini, Konstantinos Diamantopoulos, Stelios Kiosses, Marios Politis
It is estimated that up to 80% of patients with Parkinson's disease will eventually develop cognitive impairment over the course of their illness. Even at the time of diagnosis, cognitive impairment has been reported in 20-25% of patients. Commonly affected cognitive domains are executive function, visuospatial ability and attention control. In addition, patients with Parkinson's disease dementia may present with deficits in language function and verbal memory. Psychosis may occur in approximately 40% of patients with Parkinson's disease, and is associated with an increased risk of developing cognitive impairment...
May 2017: Practitioner
https://www.readbyqxmd.com/read/29119863/understanding-uncertainty-in-young-onset-parkinson-disease
#18
Michael Ravenek, Debbie L Rudman, Mary E Jenkins, Sandi Spaulding
Objectives Individuals living with young-onset Parkinson's disease compose a rare subtype of a disease typically associated with older age. Situated within a large grounded theory study exploring information behavior, this paper describes the core category of the theory, i.e. uncertainty. Methods Data were collected with 39 individuals living with young-onset Parkinson's disease who took part in in-depth interviews, focus groups and/or an online discussion board. Fourteen autobiographies written by individuals living with young-onset Parkinson's disease were also used as data sources...
December 2017: Chronic Illness
https://www.readbyqxmd.com/read/29119593/prediction-of-cognitive-worsening-in-de-novo-parkinson-s-disease-clinical-use-of-biomarkers
#19
Dario Arnaldi, Fabrizio De Carli, Francesco Famà, Andrea Brugnolo, Nicola Girtler, Agnese Picco, Matteo Pardini, Jennifer Accardo, Luca Proietti, Federico Massa, Matteo Bauckneht, Silvia Morbelli, Gianmario Sambuceti, Flavio Nobili
BACKGROUND: Cognitive impairment is a frequent and disabling feature of Parkinson's disease. Identifying the factors able to predict cognitive worsening since the early stage may improve disease management. The objective of this study was to define the best predictors of future cognitive worsening in a group of patients with newly diagnosed PD and to propose cutoff values potentially useful at the individual level. METHODS: Fifty-four consecutive drug-naive patients with de novo PD were prospectively evaluated by clinical and neuropsychological assessment, resting EEG, and (123) I-FP-CIT-SPECT and clinically classified into mainly motor, diffuse/malignant, and intermediate PD subtypes; they were then followed up for an average of 5 years...
November 9, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29104810/management-of-psychosis-in-parkinson-s-disease-emphasizing-clinical-subtypes-and-pathophysiological-mechanisms-of-the-condition
#20
REVIEW
Raquel N Taddei, Seyda Cankaya, Sandeep Dhaliwal, K Ray Chaudhuri
Investigation into neuropsychiatric symptoms in Parkinson's disease (PD) is sparse and current drug development is mainly focused on the motor aspect of PD. The tight association of psychosis with an impaired quality of life in PD, together with an important underreporting of this comorbid condition, contributes to its actual insufficient assessment and management. Furthermore, the withdrawal from access to readily available treatment interventions is unacceptable and has an impact on PD prognosis. Despite its impact, to date no standardized guidelines to the adequate management of PD psychosis are available and they are therefore highly needed...
2017: Parkinson's Disease
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