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Parkinson disease with dementia

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https://www.readbyqxmd.com/read/29332010/oligogenic-genetic-variation-of-neurodegenerative-disease-genes-in-980-postmortem-human-brains
#1
Michael J Keogh, Wei Wei, Juvid Aryaman, Ian Wilson, Kevin Talbot, Martin R Turner, Chris-Anne McKenzie, Claire Troakes, Johannes Attems, Colin Smith, Safa Al Sarraj, Chris M Morris, Olaf Ansorge, Stuart Pickering-Brown, Nick Jones, James W Ironside, Patrick F Chinnery
BACKGROUND: Several studies suggest that multiple rare genetic variants in genes causing monogenic forms of neurodegenerative disorders interact synergistically to increase disease risk or reduce the age of onset, but these studies have not been validated in large sporadic case series. METHODS: We analysed 980 neuropathologically characterised human brains with Alzheimer's disease (AD), Parkinson's disease-dementia with Lewy bodies (PD-DLB), frontotemporal dementia-amyotrophic lateral sclerosis (FTD-ALS) and age-matched controls...
January 13, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29330884/synapsin-iii-is-a-key-component-of-%C3%AE-synuclein-fibrils-in-lewy-bodies-of-pd-brains
#2
Francesca Longhena, Gaia Faustini, Tatiana Varanita, Michela Zaltieri, Vanessa Porrini, Isabella Tessari, Pietro Luigi Poliani, Cristina Missale, Barbara Borroni, Alessandro Padovani, Luigi Bubacco, Marina Pizzi, PierFranco Spano, Arianna Bellucci
Lewy bodies (LB) and Lewy neurites (LN), which are primarily composed of α-synuclein (α-syn), are neuropathological hallmarks of Parkinson's disease (PD) and dementia with Lewy bodies (DLB). We recently found that the neuronal phosphoprotein synapsin III (syn III) controls dopamine release via cooperation with α-syn and modulates α-syn aggregation. Here, we observed that LB and LN, in the substantia nigra of PD patients and hippocampus of one subject with DLB, displayed a marked immunopositivity for syn III...
January 13, 2018: Brain Pathology
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
#3
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/29324989/synaptic-markers-of-cognitive-decline-in-neurodegenerative-diseases-a-proteomic-approach
#4
Erika Bereczki, Rui M Branca, Paul T Francis, Joana B Pereira, Jean-Ha Baek, Tibor Hortobágyi, Bengt Winblad, Clive Ballard, Janne Lehtiö, Dag Aarsland
Cognitive changes occurring throughout the pathogenesis of neurodegenerative diseases are directly linked to synaptic loss. We used in-depth proteomics to compare 32 post-mortem human brains in the prefrontal cortex of prospectively followed patients with Alzheimer's disease, Parkinson's disease with dementia, dementia with Lewy bodies and older adults without dementia. In total, we identified 10 325 proteins, 851 of which were synaptic proteins. Levels of 25 synaptic proteins were significantly altered in the various dementia groups...
January 9, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29323400/-amimia-in-parkinson-s-disease-significance-and-correlation-with-the-clinical-features
#5
P J Garcia-Ruiz, C E Feliz-Feliz, T Maycas-Cepeda, J Del Val-Fernandez
INTRODUCTION: Reduced facial expression or amimia is one of the most typical characteristics of Parkinson's disease (PD). Despite being described in classic texts, its significance, physiopathology and correlation with motor and non-motor symptoms is largely unknown. PATIENTS AND METHODS: We have studied facial bradykinesia in a group of 84 de novo PD patients prospectively evaluated for five years. We also studied the relationship of facial bradykinesia with depression in a subgroup of 30 patients...
January 16, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29318592/falls-in-cognitively-impaired-older-adults-implications-for-risk-assessment-and-prevention
#6
Manuel Montero-Odasso, Mark Speechley
OBJECTIVES: To provide an overview of the role of cognition in falls, with potential implications for managing and preventing falls in older adults. DESIGN: Review. SETTING: Observational and interventional studies addressing the role of cognition on falls. PARTICIPANTS: Community-dwelling older adults (65 years and older). MEASUREMENTS: The relationship between gait and cognition in aging and neurodegeneration was reviewed in the medical literature to highlight the role of brain motor control deficits in fall risk...
January 10, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29314218/goal-orientated-cognitive-rehabilitation-for-dementias-associated-with-parkinson-s-disease-a-pilot-randomised-controlled-trial
#7
John V Hindle, Tamlyn J Watermeyer, Julie Roberts, Andrew Brand, Zoe Hoare, Anthony Martyr, Linda Clare
OBJECTIVE: To examine the appropriateness and feasibility of cognitive rehabilitation for people with dementias associated with Parkinson's in a pilot randomised controlled study. METHODS: This was a single-blind pilot randomised controlled trial of goal-oriented cognitive rehabilitation for dementias associated with Parkinson's. After goal setting, participants were randomised to cognitive rehabilitation (n = 10), relaxation therapy (n = 10), or treatment-as-usual (n = 9)...
January 4, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29311330/gba1-deficiency-negatively-affects-physiological-%C3%AE-synuclein-tetramers-and-related-multimers
#8
Sangjune Kim, Seung Pil Yun, Saebom Lee, George Essien Umanah, Veera Venkata Ratnam Bandaru, Xiling Yin, Peter Rhee, Senthilkumar S Karuppagounder, Seung-Hwan Kwon, Hojae Lee, Xiaobo Mao, Donghoon Kim, Akhilesh Pandey, Gabsang Lee, Valina L Dawson, Ted M Dawson, Han Seok Ko
Accumulating evidence suggests that α-synuclein (α-syn) occurs physiologically as a helically folded tetramer that resists aggregation. However, the mechanisms underlying the regulation of formation of α-syn tetramers are still mostly unknown. Cellular membrane lipids are thought to play an important role in the regulation of α-syn tetramer formation. Since glucocerebrosidase 1 (GBA1) deficiency contributes to the aggregation of α-syn and leads to changes in neuronal glycosphingolipids (GSLs) including gangliosides, we hypothesized that GBA1 deficiency may affect the formation of α-syn tetramers...
January 8, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29310663/%C3%AE-synuclein-accumulation-and-gba-deficiency-due-to-l444p-gba-mutation-contributes-to-mptp-induced-parkinsonism
#9
Seung Pil Yun, Donghoon Kim, Sangjune Kim, SangMin Kim, Senthilkumar S Karuppagounder, Seung-Hwan Kwon, Saebom Lee, Tae-In Kam, Suhyun Lee, Sangwoo Ham, Jae Hong Park, Valina L Dawson, Ted M Dawson, Yunjong Lee, Han Seok Ko
BACKGROUND: Mutations in glucocerebrosidase (GBA) cause Gaucher disease (GD) and increase the risk of developing Parkinson's disease (PD) and Dementia with Lewy Bodies (DLB). Since both genetic and environmental factors contribute to the pathogenesis of sporadic PD, we investigated the susceptibility of nigrostriatal dopamine (DA) neurons in L444P GBA heterozygous knock-in (GBA +/L444P ) mice to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), a selective dopaminergic mitochondrial neurotoxin...
January 8, 2018: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/29310658/the-involvement-of-endoplasmic-reticulum-formation-and-protein-synthesis-efficiency-in-vcp-and-atl1-related-neurological-disorders
#10
REVIEW
Yu-Tzu Shih, Yi-Ping Hsueh
The endoplasmic reticulum (ER) is the biggest organelle in cells and is involved in versatile cellular processes. Formation and maintenance of ER morphology are regulated by a series of proteins controlling membrane fusion and curvature. At least six different ER morphology regulators have been demonstrated to be involved in neurological disorders-including Valosin-containing protein (VCP), Atlastin-1 (ATL1), Spastin (SPAST), Reticulon 2 (RTN2), Receptor expression enhancing protein 1 (REEP1) and RAB10-suggesting a critical role of ER formation in neuronal activity and function...
January 8, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29305919/pathological-role-of-lipid-interaction-with-%C3%AE-synuclein-in-parkinson-s-disease
#11
REVIEW
Mari Suzuki, Kazunori Sango, Keiji Wada, Yoshitaka Nagai
Alpha-synuclein (αSyn) plays a central role in the pathogenesis of Parkinson's disease (PD) and dementia with Lewy bodies (DLB). In sporadic PD and DLB, normally harmless αSyn proteins without any mutations might gain toxic functions by unknown mechanisms. Thus, it is important to elucidate the factors promoting the toxic conversion of αSyn, towards understanding the pathogenesis of and developing disease-modifying therapies for PD and DLB. Accumulating biophysical and biochemical studies have demonstrated that αSyn interacts with lipid membrane, and the interaction influences αSyn oligomerization and aggregation...
January 3, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29305061/a-refined-concept-%C3%AE-synuclein-dysregulation-disease
#12
REVIEW
Hideki Mochizuki, Chi-Jing Choong, Eliezer Masliah
α-synuclein (αSyn) still remains a mysterious protein even two decades after SNCA encoding it was identified as the first causative gene of familial Parkinson's disease (PD). Accumulation of αSyn causes α-synucleinopathies including PD, dementia with Lewy bodies (DLB) and multiple system atrophy (MSA). Recent advances in therapeutic approaches offer new antibody-, vaccine-, antisense-oligonucleotide- and small molecule-based options to reduce αSyn protein levels and aggregates in patient's brain. Gathering research information of other neurological disease particularly Alzheimer's disease, recent disappointment of an experimental amyloid plaques busting antibody in clinical trials underscores the difficulty of treating people who show even mild dementia as damage in their brain may already be too extensive...
January 2, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29304050/severe-hyposmia-and-aberrant-functional-connectivity-in-cognitively-normal-parkinson-s-disease
#13
Noritaka Yoneyama, Hirohisa Watanabe, Kazuya Kawabata, Epifanio Bagarinao, Kazuhiro Hara, Takashi Tsuboi, Yasuhiro Tanaka, Reiko Ohdake, Kazunori Imai, Michihito Masuda, Tatsuya Hattori, Mizuki Ito, Naoki Atsuta, Tomohiko Nakamura, Masaaki Hirayama, Satoshi Maesawa, Masahisa Katsuno, Gen Sobue
OBJECTIVE: Severe hyposmia is a risk factor of dementia in Parkinson's disease (PD), while the underlying functional connectivity (FC) and brain volume alterations in PD patients with severe hyposmia (PD-SH) are unclear. METHODS: We examined voxel-based morphometric and resting state functional magnetic resonance imaging findings in 15 cognitively normal PD-SH, 15 cognitively normal patients with PD with no/mild hyposmia (PD-N/MH), and 15 healthy controls (HCs)...
2018: PloS One
https://www.readbyqxmd.com/read/29303679/teleneurology-for-veterans-in-a-major-metropolitan-area
#14
Steven S Schreiber
BACKGROUND: The recent growth in telehealth has been facilitated by the need to deliver healthcare to patients living in remote or rural areas. In contrast, the role of telehealth in more urban settings is less clear. A teleneurology program was established in 2011 at the Tibor Rubin VA Medical Center (TRVAMC) in Long Beach, California. A review of teleneurology encounters was conducted to assess the feasibility of applying this telehealth modality to patients with chronic neurological disorders living in an urban setting...
January 5, 2018: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/29300426/physical-frailty-is-associated-with-longitudinal-decline-in-global-cognitive-function-in-non-demented-older-adults-a-prospective-study
#15
S Chen, T Honda, K Narazaki, T Chen, H Kishimoto, Y Haeuchi, S Kumagai
OBJECTIVES: To assess the relationship between physical frailty and subsequent decline in global cognitive function in the non-demented elderly. DESIGN AND SETTING: A prospective population-based study in a west Japanese suburban town, with two-year follow-up. PARTICIPANTS: Community-dwellers aged 65 and older without placement in long-term care, and not having a history of dementia, Parkinson's disease and depression at baseline, who participated in the cohort of the Sasaguri Genkimon Study and underwent follow-up assessments two years later (N = 1,045)...
2018: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29298278/the-impact-of-air-pollution-to-central-nervous-system-in-children-and-adults
#16
Radim J Sram, Milos Veleminsky, Milos Veleminsky, Jana Stejskalová
The aim of this paper was to review studies analyzing the associations between air pollution and neurodevelopment in children as well as the effect on adult population. Effect of prenatal exposure to polycyclic aromatic hydrocarbons (PAHs, benzo[a]pyrene, B[a]P) were already studied on cohorts from New York, Poland, China, and Spain. All results indicate changes of child behavior and neurodevelopment at the age of 3-9 years, decrease of IQ, increase of Attention Deficit Hyperactivity Disorder (ADHD), decrease of brain-derived neurotrophic factor (BDNF), reduction of left hemisphere white matter...
December 4, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29297596/neuropathology-of-autonomic-dysfunction-in-synucleinopathies
#17
REVIEW
Elizabeth A Coon, Jeremy K Cutsforth-Gregory, Eduardo E Benarroch
The synucleinopathies-Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and pure autonomic failure-result from distinct patterns of abnormal α-synuclein aggregation throughout the nervous system. Autonomic dysfunction in these disorders results from variable involvement of the central and peripheral autonomic networks. The major pathologic hallmark of Parkinson's disease and dementia with Lewy bodies is Lewy bodies and Lewy neurites; of multiple system atrophy, oligodendroglial cytoplasmic inclusions; and of pure autonomic failure, peripheral neuronal cytoplasmic inclusions...
January 3, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29285940/-characteristics-and-determinants-of-informal-care-in-chronic-diseases-in-hungary-a-comparative-analysis
#18
Zsuzsanna Beretzky, Márta Péntek
INTRODUCTION: Informal care plays an important role in ageing societies. AIM: To analyse informal care use and its determinants among patients with chronic diseases in Hungary. METHOD: Patient level data from previous studies in 14 diagnoses were analysed including patients' EQ-5D-3L health status. Descriptive statistics were performed and a linear regression model was built to analyse determinants of informal care time. RESULTS: 2047 patients (female: 58%) with mean age of 58...
December 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/29279501/drug-induced-pressure-ulcers-in-a-middle-aged-patient-with-early-stage-parkinson-s-disease
#19
Yuichi Hayashi, Hideaki Shibata, Takuya Kudo, Shohei Nishida, Rie Ishikawa, Chie Moriya, Akio Suzuki, Akio Kimura, Takashi Inuzuka
Drug-induced pressure ulcer (DIPU), which is a newly recognized adverse drug reaction, is associated with the administration of psychiatric drugs in geriatric patients with dementia. The notification of the causative drugs is crucial to the treatment of DIPU. We herein report the case of a 56-year-old woman with early-stage Parkinson's disease who developed DIPUs after starting olanzapine treatment for depressive symptoms. Our findings illustrate that if an akinetic patient with pressure ulcers is encountered, the patient's medication should be reviewed by a multidisciplinary team, to evaluate whether the development of the pressure ulcer is drug-related, regardless of the patient's age...
December 27, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29278291/rating-scales-for-cognition-in-huntington-s-disease-critique-and-recommendations
#20
REVIEW
Tiago A Mestre, Anne-Catherine Bachoud-Lévi, Johan Marinus, Julie C Stout, Jane S Paulsen, Peter Como, Kevin Duff, Cristina Sampaio, Christopher G Goetz, Esther Cubo, Glenn T Stebbins, Pablo Martinez-Martin
Cognitive impairment is one of the main features of Huntington's disease and is present across the disease spectrum. As part of the International Parkinson's Disease and Movement Disorder Society-sponsored project to review all clinical rating scales used in Huntington's disease, a systematic review of the literature was performed to identify cognitive scales used in Huntington's disease and make recommendations for their use. A total of 17 cognitive scales were identified and evaluated. None of the scales met criteria for a "recommended" status...
December 26, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
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