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Cognitive impairment in parkinson disease

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https://www.readbyqxmd.com/read/29678162/tacrolimus-induced-parkinsonism-in-a-patient-after-liver-transplantation-case-report
#1
Karin Gmitterová, Michal Minár, Miroslav Žigrai, Zuzana Košutzká, Alice Kušnírová, Peter Valkovič
BACKGROUND: Hepatic encephalopathy may manifest by a wide spectrum of neuropsychiatric symptoms, including cognitive impairment, seizures or extrapyramidal symptoms. The liver transplant can lead to improvement of the signs of encephalopathy but subsequent immunosuppressive treatment might possess pronounced neurotoxicity. CASE PRESENTATION: We present a case report of a patient with chronic liver disease who developed signs of Parkinsonism after an orthotopic liver transplant, with consecutive immunosuppressant treatment with tacrolimus...
April 20, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29674286/longitudinal-changes-over-thirty-six-months-in-postural-control-dynamics-and-cognitive-function-in-people-with-parkinson-s-disease
#2
Annette Pantall, Silvia Del Din, Lynn Rochester
BACKGROUND: Postural instability is a common motor feature in people with Parkinson's disease (PD) together with non-motor features such as cognitive dysfunction. Management of postural instability is challenging as it is often resistant to dopaminergic therapy. Greater knowledge of postural control is essential to understand postural instability in PD. RESEARCH QUESTION: This study aimed to answer how postural control differs in people with PD compared to healthy older adults (HOA)...
April 13, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29672930/clinical-and-imaging-correlates-of-amyloid-deposition-in-dementia-with-lewy-bodies
#3
Paul C Donaghy, Michael J Firbank, Alan J Thomas, Jim Lloyd, George Petrides, Nicola Barnett, Kirsty Olsen, John T O'Brien
BACKGROUND: Amyloid deposition is common in dementia with Lewy bodies, but its pathophysiological significance is unclear. OBJECTIVE: The objective of this study was to investigate the relationship between amyloid deposition and clinical profile, gray matter volume, and brain perfusion in dementia with Lewy bodies. METHODS: Dementia with Lewy bodies (n = 37), Alzheimer's disease (n = 20), and controls (n = 20) underwent a thorough clinical assessment, 3T MRI, and early- and late-phase 18 F-Florbetapir PET-CT to assess cortical perfusion and amyloid deposition, respectively...
April 19, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29671021/protective-effect-of-vinpocetine-against-neurotoxicity-of-manganese-in-adult-male-rats
#4
Rania I Nadeem, Hebatalla I Ahmed, Bahia M El-Sayeh
Manganese (Mn) is required for many essential biological processes as well as in the development and functioning of the brain. Extensive accumulation of Mn in the brain may cause central nervous system dysfunction known as manganism, a motor disorder associated with cognitive and neuropsychiatric deficits similar to parkinsonism. Vinpocetine, a synthetic derivative of the alkaloid vincamine, is used to improve the cognitive function in cerebrovascular diseases. It possesses antioxidant and antiinflammatory properties...
April 18, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29670547/medications-used-for-cognitive-enhancement-in-patients-with-schizophrenia-bipolar-disorder-alzheimer-s-disease-and-parkinson-s-disease
#5
REVIEW
Wen-Yu Hsu, Hsien-Yuan Lane, Chieh-Hsin Lin
Background/aims: Cognitive impairment, which frequently occurs in patients with schizophrenia, bipolar disorder, Alzheimer's disease, and Parkinson's disease, has a significant impact on the daily lives of both patients and their family. Furthermore, since the medications used for cognitive enhancement have limited efficacy, the issue of cognitive enhancement still remains a clinically unsolved challenge. Sampling and methods: We reviewed the clinical studies (published between 2007 and 2017) that focused on the efficacy of medications used for enhancing cognition in patients with schizophrenia, bipolar disorder, Alzheimer's disease, and Parkinson's disease...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29669609/neuropsychological-test-performance-in-parkinsonism-without-dopaminergic-deficiency-on-123i-fp-cit-spect-imaging
#6
Kathryn A Wyman-Chick, Phillip K Martin, Michal Minár, Manuel Menéndez-González, Lauren O Erickson, Tania Álvarez-Avellón, Ryan W Schroeder
OBJECTIVES: To examine neuropsychological test performance among individuals clinically diagnosed with Parkinson's disease (PD) without evidence of dopaminergic deficiency on [123]I-CIT single photon emission computed tomography imaging. METHODS: Data were obtained from the Parkinson's Progression Marker Initiative. The sample included 59 participants with scans without evidence of dopaminergic deficiency (SWEDD), 412 with PD, and 114 healthy controls (HC). Tests included Judgment of Line Orientation, Letter-Number Sequencing, Symbol Digit Modalities, Hopkins Verbal Learning Test-Revised, and Letter and Category Fluency...
April 19, 2018: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29668839/prognostic-factors-of-functional-outcome-after-hip-fracture-surgery-a-systematic-review
#7
K J Sheehan, L Williamson, J Alexander, C Filliter, B Sobolev, P Guy, L M Bearne, C Sackley
Objective: this systematic review aimed to identify immutable and modifiable prognostic factors of functional outcomes and their proposed mechanism after hip fracture surgery. Design: systematic search of MEDLINE, Embase, CINAHL, PEDRO, OpenGrey and ClinicalTrials.gov for observational studies of prognostic factors of functional outcome after hip fracture among surgically treated adults with mean age of 65 years and older. Study selection, quality assessment, and data extraction were completed independently by two reviewers...
April 12, 2018: Age and Ageing
https://www.readbyqxmd.com/read/29665124/how-does-dementia-with-lewy-bodies-start-prodromal-cognitive-changes-in-rem-sleep-behavior-disorder
#8
Daphné Génier Marchand, Ronald B Postuma, Frédérique Escudier, Jessie De Roy, Amélie Pelletier, Jacques Montplaisir, Jean-François Gagnon
Objective We describe the progression of cognitive decline and identify the predictive values of cognitive tests in three groups of REM sleep behavior disorder (RBD) patients classified at their last follow-up as having Parkinson's disease (PD), dementia with Lewy bodies (DLB), or still-idiopathic. Methods Patients (n=109) underwent polysomnographic, neurological, and neuropsychological assessments. We used linear mixed-model analyses to compare the progression of cognitive test performance between the three groups over a three-year prodromal period, and performed linear regressions for a six-year prodromal period...
April 17, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29664058/relationships-between-rapid-eye-movement-sleep-behavior-disorder-and-neurodegenerative-diseases-clinical-assessments-biomarkers-and-treatment
#9
REVIEW
Min Li, Li Wang, Jiang-Hong Liu, Shu-Qin Zhan
Objective: Rapid eye movement sleep behavior disorder (RBD) is characterized by dream enactment and loss of muscle atonia during rapid eye movement sleep. RBD is closely related to α-synucleinopathies including Parkinson's disease, dementia with Lewy bodies, and multiple system atrophy. Many studies have investigated the markers of imaging and neurophysiological, genetic, cognitive, autonomic function of RBD and their predictive value for neurodegenerative diseases. This report reviewed the progress of these studies and discussed their limitations and future research directions...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29664048/effect-of-rapid-eye-movement-sleep-behavior-disorder-on-obstructive-sleep-apnea-severity-and-cognition-of-parkinson-s-disease-patients
#10
Jun-Ying Huang, Jin-Ru Zhang, Yun Shen, Hui-Jun Zhang, Yu-Lan Cao, Cheng-Jie Mao, Ya-Ping Yang, Jing Chen, Chun-Feng Liu, Jie Li
Background: Rapid eye movement (REM) sleep behavior disorder (RBD) and obstructive sleep apnea (OSA) are the most common sleep disorders in Parkinson's disease (PD). The aim of this study was to identify whether RBD could alleviate OSA severity in PD patients and its effect on cognitive impairment. Methods: From February 2014 to May 2017, we recruited 174 PD patients from the Second Affiliated Hospital of Soochow University, all of whom underwent polysomnography (PSG)...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29629498/multifocal-alterations-of-white-matter-accompany-the-transition-from-normal-cognition-to-dementia-in-parkinson-s-disease-patients
#11
Maria Chondrogiorgi, Loukas G Astrakas, Anastasia K Zikou, Luca Weis, Vassilios G Xydis, Angelo Antonini, Maria I Argyropoulou, Spiridon Konitsiotis
The purpose of the present study was to investigate the pattern of white matter (WM) changes associated with Parkinson's disease (PD)-related cognitive impairment by using fractional anisotropy (FA), mean diffusivity (MD), axial diffusivity (AD) and radial diffusivity (RD) measures. Diffusion Tensor Imaging (DTI) was performed in 21 PD-patients with dementia (PDD) and in an age-matched control group including 40 PD-patients without dementia (PD-CTRL). The Parkinson's disease-Cognitive Rating Scale (PD-CRS) was used for patients' neuropsychological assessment...
April 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29627942/orthostatic-hypotension-acutely-impairs-executive-functions-in-parkinson-s-disease
#12
Michela Sforza, Francesca Assogna, Domiziana Rinaldi, Giuliano Sette, Stefania Tagliente, Francesco E Pontieri
Orthostatic hypotension is a frequent non-motor symptom of Parkinson's disease, with negative prognostic role on cognitive functions. Here we measured the acute effects of orthostatic hypotension on executive functions in Parkinson's disease patients devoid of hypertension, carotid artery stenosis, and significant chronic cerebrovascular pathology. Measurements were carried out during regular visits in outpatient setting. Twenty-eight Parkinson's disease patients were recruited and studied along scheduled outpatient visits...
April 7, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29627019/intercepting-parkinson-disease-non-motor-subtypes-a-proof-of-principle-study-in-a-clinical-setting
#13
M E Di Battista, I Cova, A Rubino, C P Papi, G Alampi, C Purcaro, N Vanacore, E Pascale, N Locuratolo, F Fattapposta, C Mariani, S Pomati, G Meco
The construct of non-motor symptoms (NMS) subtyping in Parkinson Disease (PD) is emerging as a line of research in the light of its potential role in etiopathological interpretation of PD heterogeneity. Different approaches of NMS subtyping have been proposed: an anatomical model suggests that NMS aggregate according to the underpinning pathology; other researchers find aggregation of NMS according to the motor phenotype; the contribution of genetic background to NMS has also been assessed, primarily focusing on cognitive impairment...
May 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29626840/treadmill-walking-reduces-pre-frontal-activation-in-patients-with-parkinson-s-disease
#14
Pablo Cornejo Thumm, Inbal Maidan, Marina Brozgol, Shiran Shustak, Eran Gazit, Shirley Shema Shiratzki, Hagar Bernad-Elazari, Yoav Beck, Nir Giladi, Jeffrey M Hausdorff, Anat Mirelman
BACKGROUND: Among patients with Parkinson's disease (PD), gait is typically disturbed and less automatic. These gait changes are associated with impaired rhythmicity and increased prefrontal activation, presumably in an attempt to compensate for reduced automaticity. RESEARCH QUESTION: We investigated whether during treadmill walking, when the pace is determined and fixed, prefrontal activation in patients with PD is lower, as compared to over-ground walking. METHODS: Twenty patients with PD (age: 69...
March 28, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29624752/biomarkers-for-cognitive-impairment-in-lewy-body-disorders-status-and-relevance-for-clinical-trials
#15
REVIEW
Andrew Siderowf, Dag Aarsland, Brit Mollenhauer, Jennifer G Goldman, Bernard Ravina
Biomarkers have the potential to improve diagnosis and prognosis, and guide clinical treatment decisions. In research, biomarkers can be used for patient selection and as outcome measures in clinical trials. A range of biochemical and imaging biomarkers are relevant to patients with Lewy body disorders, including PD, PD dementia, and dementia with Lewy bodies. Dopaminergic imaging is used for differential diagnosis of parkinsonian disorders versus tremor disorders without dopamingeric deficits, and also to differentiate dementia with Lewy bodies from Alzheimer's disease...
April 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29621183/tau-induced-pathology-in-epilepsy-and-dementia-notions-from-patients-and-animal-models
#16
REVIEW
Marina P Sánchez, Ana M García-Cabrero, Gentzane Sánchez-Elexpuru, Daniel F Burgos, José M Serratosa
Patients with dementia present epilepsy more frequently than the general population. Seizures are more common in patients with Alzheimer's disease (AD), dementia with Lewy bodies (LBD), frontotemporal dementia (FTD) and progressive supranuclear palsy (PSP) than in other dementias. Missense mutations in the microtubule associated protein tau (MAPT) gene have been found to cause familial FTD and PSP, while the P301S mutation in MAPT has been associated with early-onset fast progressive dementia and the presence of seizures...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29619565/quantitative-assessment-of-finger-tapping-characteristics-in-mild-cognitive-impairment-alzheimer-s-disease-and-parkinson-s-disease
#17
David R Roalf, Petra Rupert, Dawn Mechanic-Hamilton, Laura Brennan, John E Duda, Daniel Weintraub, John Q Trojanowski, David Wolk, Paul J Moberg
BACKGROUND: Fine motor impairments are common in neurodegenerative disorders, yet standardized, quantitative measurements of motor abilities are uncommonly used in neurological practice. Thus, understanding and comparing fine motor abilities across disorders have been limited. OBJECTIVES: The current study compared differences in finger tapping, inter-tap interval, and variability in Alzheimer's disease (AD), Parkinson's disease (PD), mild cognitive impairment (MCI), and healthy older adults (HOA)...
April 4, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29617933/a-qualitative-study-of-female-caregiving-spouses-experiences-of-intimate-relationships-as-cognition-declines-in-parkinson-s-disease
#18
Sabina Vatter, Kathryn R McDonald, Emma Stanmore, Linda Clare, Sheree A McCormick, Iracema Leroi
Background: the complex and progressive nature of Parkinson's disease (PD) and cognitive impairment may necessitate a care provider, a role which is frequently undertaken by a spouse. Providing and receiving care related to dementia impacts on a couple's partnership and may result in decreased intimacy and relationship satisfaction. Objective: to explore the changes in long-term intimate relationships in Parkinson's-related dementia, as perceived by spouses providing care to their partners...
April 3, 2018: Age and Ageing
https://www.readbyqxmd.com/read/29615966/dysfunction-of-protein-quality-control-in-parkinsonism-dementia-complex-of-guam
#19
Bert M Verheijen, Kiyomitsu Oyanagi, Fred W van Leeuwen
Guam parkinsonism-dementia complex (G-PDC) is an enigmatic neurodegenerative disease that is endemic to the Pacific island of Guam. G-PDC patients are clinically characterized by progressive cognitive impairment and parkinsonism. Neuropathologically, G-PDC is characterized by abundant neurofibrillary tangles, which are composed of hyperphosphorylated tau, marked deposition of 43-kDa TAR DNA-binding protein, and neuronal loss. Although both genetic and environmental factors have been implicated, the etiology and pathogenesis of G-PDC remain unknown...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29614700/personality-traits-and-cortical-activity-affect-gambling-behavior-in-parkinson-s-disease
#20
Michela Balconi, Chiara Siri, Nicoletta Meucci, Gianni Pezzoli, Laura Angioletti
BACKGROUND: Pathological gambling (PG) in Parkinson's disease (PD) manifests as a persistent and uncontrollable gambling behavior, characterized by dysfunctional decision-making and emotional impairment related to high-risk decisions. OBJECTIVE: The aim of this study was to explore the relationship between personality traits and prefrontal cortex activity in PD patients with or without PG. METHODS: Thus, hemodynamic cortical activity measured by functional near-infrared spectroscopy (fNIRS) and Iowa Gambling Task (IGT) performance were recorded in forty-six PD patients, divided into three groups according to their gambling status: PD patients with active gambling behavior (PDG); PD patients who remitted from PG (PDNG); and a control group (CG) composed by patients with PD only...
March 26, 2018: Journal of Parkinson's Disease
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