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Parkinson's dementia

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https://www.readbyqxmd.com/read/28339400/a-systematic-review-of-the-huntington-disease-like-2-phenotype
#1
David G Anderson, Ruth H Walker, Myles Connor, Jonathan Carr, Russell L Margolis, Amanda Krause
BACKGROUND: Huntington Disease-like 2 (HDL2) is a neurodegenerative disorder similar to Huntington Disease (HD) in its clinical phenotype, genetic characteristics, neuropathology and longitudinal progression. Proposed specific differences include an exclusive African ancestry, lack of eye movement abnormalities, increased Parkinsonism, and acanthocytes in HDL2. OBJECTIVE: The objective was to determine the similarities and differences between HD and HDL2 by establishing the clinical phenotype of HDL2 with the published cases...
March 21, 2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28336349/decisional-capacity-for-advanced-care-directives-in-parkinson-s-disease-with-cognitive-concerns
#2
Muneer Abu Snineh, Richard Camicioli, Janis M Miyasaki
INTRODUCTION: Physician Orders for Life Sustaining Therapies (POLST) or Goals of Care (GOC) are legal documents to guide intensity of interventions (ICU, resuscitation, hospitalization or comfort care) completed by healthcare professionals following counseling of patients or their designated medical decision makers. Capacity (understanding, appreciation, reasoning and expressing a choice) to consent to POLST or GOC has not been determined among Parkinson's disease (PD) patients. We sought to assess GOC PD decisional capacity for those with cognitive complaints but not dementia...
March 8, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28335805/erratum-to-cognitive-rehabiliation-for-parkinson-s-disease-dementia-a-study-protocol-for-a-pilot-randomised-controlled-trial
#3
John V Hindle, Tamlyn J Watermeyer, Julie Roberts, Anthony Martyr, Huw Lloyd-Williams, Andrew Brand, Petra Gutting, Zoe Hoare, Rhiannon Tudor Edwards, Linda Clare
No abstract text is available yet for this article.
March 23, 2017: Trials
https://www.readbyqxmd.com/read/28331324/update-on-the-treatment-of-parkinson-s-disease-psychosis-role-of-pimavanserin
#4
REVIEW
Brianna L Combs, Arthur G Cox
Parkinson's disease (PD) has a prevalence of nearly 1 million people in the USA, with increasing incidence in the elderly population. Generally, the age of presentation is between 55 and 65 years, with the likelihood of diagnosis increasing as patients reach the age of 80 years or above. Some of the common treatments for PD increase dopamine levels in the brain. Dopaminergic therapy helps to improve motor and non-motor symptoms, but it is not without risks. Dopaminergic therapy can cause confusion, delirium, and psychotic-like behavior...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28330542/-lewy-body-dementias
#5
Annemette Løkkegaard, Lise Korbo
Dementia with Lewy bodies and Parkinson disease dementia share the same pathophysiology. Together they are called Lewy body dementias and are the second most common type of dementia. Lewy body dementias receive little attention, and patients are often misdiagnosed, leading to less than ideal management. In this article, diagnostic criteria combined with imaging and other biomarkers as well as current treatment recommendations are summarized, and some of the challenges for the future are outlined. Refinement of diagnosis and clarification of the pathogenesis are required in search for disease-modifying treatments...
March 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28329332/excessive-daytime-sleepiness-predicts-neurodegeneration-in-idiopathic-rem-sleep-behavior-disorder
#6
Junying Zhou, Jihui Zhang, Siu Ping Lam, Joey Wy Chan, Vincent Mok, Anne Chan, Shirley Xin Li, Yaping Liu, Xiangdong Tang, Wing Ho Yung, Yun Kwok Wing
Study Objectives: To determine the association of excessive daytime sleepiness (EDS) with the conversion of neurodegenerative diseases in patients with idiopathic REM sleep behavior disorder (iRBD). Methods: A total of 179 patients with iRBD (79.1% males, mean age = 66.3 ± 9.8 years) were consecutively recruited. Forty-five patients with Epworth Sleepiness Scale score ≥ 14 were defined as having EDS. Demographic, clinical and polysomnographic data were compared between iRBD patients with and without EDS...
March 16, 2017: Sleep
https://www.readbyqxmd.com/read/28329031/who-take-naps-self-reported-and-objectively-measured-napping-in-very-old-women
#7
Yue Leng, Katie Stone, Sonia Ancoli-Israel, Kenneth Covinsky, Kristine Yaffe
Background: Despite the widespread belief that napping is common among older adults, little is known about the correlates of napping. We examined the prevalence and correlates of self-reported and objectively measured napping among very old women. Methods: We studied 2,675 community-dwelling women (mean age 84.5 ± 3.7 years; range 79-96). Self-reported napping was defined as a report of regular napping for ≥1 hour per day. Individual objective naps were defined as ≥5 consecutive minutes of inactivity as measured by actigraphy and women were characterized as "objective nappers" if they had at least 60 minutes of naps per day...
February 18, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28326670/validation-of-an-informant-based-cognitive-screening-tool-for-parkinson-disease
#8
Kok-Yoon Chee, Kheng-Yee Ong, Chin-Yeat Mak, Sapini Yacob, Shen-Cheng Yeo, Nathisha Thrichelam, Deepa Darshini Amarnath, Kai-Shin Thong, Chee-Hoong Moey, Thanam Ponusamy, Shanthi Viswanathan, Santhi Puvanarajah
INTRODUCTION: The objective of this study was to establish the psychometric properties of the AD8 Dementia Screening Interview in patients with Parkinson disease (PD) with or without cognitive impairment using the Montreal Cognitive Assessment Tool (MoCA) for comparison. METHODS: The AD8 was translated into Malay for Malay-speaking participants. A correlation analysis and a receiver operator characteristic curve were generated to establish the psychometric properties of the AD8 in relation to the MoCA...
March 21, 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/28324300/%C3%AE-synuclein-and-parkinsonism-updates-and-future-perspectives
#9
REVIEW
Kaie Rosborough, Neha Patel, Lorraine V Kalia
Mutations in the SNCA gene, which encodes the α-synuclein protein, were the first discovered genetic causes of familial parkinsonism with Lewy pathology. To date, six different SNCA missense mutations as well as multiplications are known to cause parkinsonism. For this review, we performed a literature search to identify all published cases of SNCA-related parkinsonism to provide an updated summary of the clinical and neuropathological features of parkinsonism due to SNCA mutations. Familial parkinsonism associated with SNCA is rare, but α-synuclein aggregation is a core feature of sporadic parkinsonism, including Parkinson's disease, dementia with Lewy bodies, and multiple system atrophy...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28321951/transcriptional-network-analysis-in-frontal-cortex-in-lewy-body-diseases-with-focus-on-dementia-with-lewy-bodies
#10
Gabriel Santpere, Paula Garcia-Esparcia, Pol Andres-Benito, Belen Lorente-Galdos, Arcadi Navarro, Isidro Ferrer
The present study investigates global transcriptional changes in frontal cortex area 8 in incidental Lewy Body disease (iLBD), Parkinson disease (PD) and Dementia with Lewy bodies (DLB). We identified different co-expressed gene sets associated with disease stages, and gene ontology categories enriched in gene modules and differentially expressed genes including modules or gene clusters correlated to iLBD comprising upregulated dynein genes and taste receptors, and down-regulated innate inflammation. Focusing on DLB, we found modules with genes significantly enriched in functions related to RNA and DNA production, mitochondria and energy metabolism, purine metabolism, chaperone and protein folding system, and synapses and neurotransmission (particularly the GABAergic system)...
March 21, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28320296/biological-basis-for-amyloidogenesis-in-alzheimer-s-disease
#11
REVIEW
T V Andreeva, W J Lukiw, E I Rogaev
Certain cellular proteins normally soluble in the living organism under certain conditions form aggregates with a specific cross-β sheet structure called amyloid. These intra- or extracellular insoluble aggregates (fibers or plaques) are hallmarks of many neurodegenerative pathologies including Alzheimer's disease (AD), Huntington's disease, Parkinson's disease, prion disease, and other progressive neurological diseases that develop in the aging human central nervous system. Amyloid diseases (amyloidoses) are widespread in the elderly human population, a rapidly expanding demographic in many global populations...
February 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320196/extended-timed-up-and-go-assessment-as-a-clinical-indicator-of-cognitive-state-in-parkinson-s-disease
#12
Tess Evans, Alexa Jefferson, Michelle Byrnes, Sue Walters, Soumya Ghosh, Frank L Mastaglia, Brian Power, Ryan S Anderton
OBJECTIVE: To evaluate a modified extended Timed Up and Go (extended-TUG) assessment against a panel of validated clinical assessments, as an indicator of Parkinson's disease (PD) severity and cognitive impairment. METHODS: Eighty-seven participants with idiopathic PD were sequentially recruited from a Movement Disorders Clinic. An extended-TUG assessment was employed which required participants to stand from a seated position, walk in a straight line for 7m, turn 180° and then return to the start, in a seated position...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319892/mitochondrial-hyperpolarization-in-ipsc-derived-neurons-from-patients-of-ftdp-17-with-10-16-mapt-mutation-leads-to-oxidative-stress-and-neurodegeneration
#13
Noemí Esteras, Jonathan D Rohrer, John Hardy, Selina Wray, Andrey Y Abramov
Tau protein inclusions are a frequent hallmark of a variety of neurodegenerative disorders. The 10+16 intronic mutation in MAPT gene, encoding tau, causes frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17), by altering the splicing of the gene and inducing an increase in the production of 4R tau isoforms, which are more prone to aggregation. However, the molecular mechanisms linking increased 4R tau to neurodegeneration are not well understood. Here, we have used iPSC-derived neurons from patients of FTDP-17 carrying the 10+16 mutation to study the molecular mechanisms underlying neurodegeneration...
March 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28315846/risk-factors-for-early-psychosis-in-pd-insights-from-the-parkinson-s-progression-markers-initiative
#14
Dominic H Ffytche, Joana B Pereira, Clive Ballard, K Ray Chaudhuri, Daniel Weintraub, Dag Aarsland
BACKGROUND: Parkinson's Disease (PD) psychosis refers to the spectrum of illusions, formed hallucinations and delusions that occur in PD. Visual hallucinations and illusions are thought to be caused by specific cognitive and higher visual function deficits and patients who develop such symptoms early in the disease course have greater rates of cognitive decline and progression to dementia. To date, no studies have investigated whether such deficits are found prior to the onset of PD psychosis...
April 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28315844/cerebral-glucose-metabolism-and-cognition-in-newly-diagnosed-parkinson-s-disease-icicle-pd-study
#15
M J Firbank, A J Yarnall, R A Lawson, G W Duncan, T K Khoo, G S Petrides, J T O'Brien, R A Barker, R J Maxwell, D J Brooks, D J Burn
OBJECTIVE: To assess reductions of cerebral glucose metabolism in Parkinson's disease (PD) with 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET), and their associations with cognitive decline. METHODS: FDG-PET was performed on a cohort of 79 patients with newly diagnosed PD (mean disease duration 8 months) and 20 unrelated controls. PD participants were scanned while on their usual dopaminergic medication. Cognitive testing was performed at baseline, and after 18 months using the Cognitive Drug Research (CDR) and Cambridge Neuropsychological Test Automated Battery (CANTAB) computerised batteries, the Mini-Mental State Examination (MMSE), and the Montreal Cognitive Assessment (MoCA)...
April 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28314948/motor-and-non-motor-symptoms-in-old-age-onset-parkinson-s-disease-patients
#16
Marcelo D Mendonça, Tania Lampreia, Rita Miguel, André Caetano, Raquel Barbosa, Paulo Bugalho
Advancing age is a well-known risk factor for Parkinson's disease (PD). With population ageing it is expected that the total number of patients with PD onset at oldage increases. Information on the motor but particularly on non-motor phenotype of this late-onset population is lacking. We recruited 24 patients with PD onset at or over 75 years. Each patient was matched with 1 control patient with PD onset between the ages of 40 and 65 and matched for disease duration. Both groups were assessed with the UPDRS, the Non-motor symptoms scale (NMSS) and other scales to assess non-motor symptoms...
March 17, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28304294/long-term-cognitive-decline-in-dementia-with-lewy-bodies-in-a-large-multicenter-international-cohort
#17
Milica G Kramberger, Bjørn Auestad, Sara Garcia-Ptacek, Carla Abdelnour, Josep Garre Olmo, Zuzana Walker, Afina W Lemstra, Elisabet Londos, Frederic Blanc, Laura Bonanni, Ian McKeith, Bengt Winblad, Frank Jan de Jong, Flavio Nobili, Elka Stefanova, Maria Petrova, Cristian Falup-Pecurariu, Irena Rektorova, Sevasti Bostantjopoulou, Roberta Biundo, Daniel Weintraub, Dag Aarsland
BACKGROUND/OBJECTIVE: The aim of this study was to describe the rate and clinical predictors of cognitive decline in dementia with Lewy bodies (DLB), and compare the findings with Alzheimer's disease (AD) and Parkinson's disease dementia (PDD) patients. METHODS: Longitudinal scores for the Mini-Mental State Examination (MMSE) in 1,290 patients (835 DLB, 198 PDD, and 257 AD) were available from 18 centers with up to three years longitudinal data. Linear mixed effects analyses with appropriate covariates were used to model MMSE decline over time...
March 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28302047/neuroinflammation-as-a-common-mechanism-associated-with-the-modifiable-risk-factors-for-alzheimer-s-and-parkinson-s-diseases
#18
Jordan Alexander McKenzie, Lindsay J Spielman, Caitlin B Pointer, Jessica R Lowry, Ekta Bajwa, Carolyn W Lee, Andis Klegeris
Alzheimer's disease (AD) and Parkinson's disease (PD) are among the most common causes of dementia, which increasingly contribute to morbidity and mortality worldwide. A common hallmark in the pathogenesis of these two diseases is neuroinflammation, which is initially triggered by the presence of pathological structures associated with these disorders. Chronic neuroinflammation is sustained by persistent and aberrant microglial activation in the brain, which results in damage and death of neighboring cells, including neurons and glial cells...
March 15, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28297844/cable-equation-for-general-geometry
#19
Erick J López-Sánchez, Juan M Romero
The cable equation describes the voltage in a straight cylindrical cable, and this model has been employed to model electrical potential in dendrites and axons. However, sometimes this equation might give incorrect predictions for some realistic geometries, in particular when the radius of the cable changes significantly. Cables with a nonconstant radius are important for some phenomena, for example, discrete swellings along the axons appear in neurodegenerative diseases such as Alzheimers, Parkinsons, human immunodeficiency virus associated dementia, and multiple sclerosis...
February 2017: Physical Review. E
https://www.readbyqxmd.com/read/28288370/the-role-of-gpcrs-in-neurodegenerative-diseases-avenues-for-therapeutic-intervention
#20
REVIEW
Yunhong Huang, Nicholas Todd, Amantha Thathiah
Neurodegenerative diseases represent a large group of neurological disorders with heterogeneous clinical and pathological profiles. The majority of current therapeutic strategies provide temporary symptomatic relief but do not target the underlying disease pathobiology and thus do not affect disease progression. G protein-coupled receptors (GPCRs) are among the most successful targets for therapeutic development of central nervous system (CNS) disorders. Many current clinical therapeutic agents act by targeting this class of receptors and downstream signaling pathways...
March 10, 2017: Current Opinion in Pharmacology
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