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https://www.readbyqxmd.com/read/28647831/alterations-in-regional-homogeneity-of-resting-state-brain-activity-in-fatigue-of-parkinson-s-disease
#1
Junyi Li, Yongsheng Yuan, Min Wang, Jiejin Zhang, Li Zhang, Siming Jiang, Jian Ding, Kezhong Zhang
Fatigue is a common complaint in patients with Parkinson's disease (PD). However, the neural bases of fatigue in PD remain uncertain. In this cross-sectional study, our aim was to study the change of the local brain function in PD patients with fatigue. Among 49 patients with PD, 17 of them had fatigue and the remaining 32 patients without fatigue, and 25 age- and gender-matched healthy controls were enrolled. All subjects were evaluated with Fatigue Severity Scale (FSS) and had a resting-state functional magnetic resonance imaging (rs-fMRI) scan...
June 24, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28638722/associations-between-cognitive-impairment-and-motor-dysfunction-in-parkinson-s-disease
#2
Yi-Xuan Wang, Jue Zhao, Da-Ke Li, Fang Peng, Ying Wang, Ke Yang, Zhen-Yang Liu, Feng-Tao Liu, Jian-Jun Wu, Jian Wang
INTRODUCTION: Numerous studies have been carried out to explore the potential association between neurologic deficits and variable clinical manifestations of Parkinson's disease (PD). The aim of our study was to investigate the association between cognitive performance and motor dysfunction in Chinese patients with PD. METHODS: Data from 96 patients with PD were obtained from the Parkinson's disease patient cohort database of Huashan Hospital. All participants underwent a comprehensive neuropsychological evaluation to assess cognitive status, that included scoring on the Mini-mental state examination (MMSE), followed by more detailed cognitive assessment on five main cognitive domains (verbal memory, nonverbal memory, visuospatial function, language and attention/executive function)...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28621693/abnormalities-of-cortical-neural-synchronization-mechanisms-in-subjects-with-mild-cognitive-impairment-due-to-alzheimer-s-and-parkinson-s-diseases-an-eeg-study
#3
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Cordone, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Flavio Nobili, Dario Arnaldi, Francesco Famà, Dag Aarsland, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Marco Onofrj, Fabrizio Stocchi, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Georg Caravias, Heinrich Garn, Fabiola Sorpresi, Michela Pievani, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, Raffaella Franciotti, Giovanni B Frisoni, Laura Bonanni, Maria Francesca De Pandis
The aim of this retrospective and exploratory study was that the cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms might reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and Parkinson's disease (PDMCI) as compared to healthy subjects. Clinical and rsEEG data of 75 ADMCI, 75 PDMCI, and 75 cognitively normal elderly (Nold) subjects were available in an international archive...
June 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28611616/differential-functional-connectivity-alterations-of-two-subdivisions-within-the-right-dlpfc-in-parkinson-s-disease
#4
Julian Caspers, Christian Mathys, Felix Hoffstaedter, Martin Südmeyer, Edna C Cieslik, Christian Rubbert, Christian J Hartmann, Claudia R Eickhoff, Kathrin Reetz, Christian Grefkes, Jochen Michely, Bernd Turowski, Alfons Schnitzler, Simon B Eickhoff
Patients suffering from Parkinson's disease (PD) often show impairments in executive function (EF) like decision-making and action control. The right dorsolateral prefrontal cortex (dlPFC) has been strongly implicated in EF in healthy subjects and has repeatedly been reported to show alterations related to EF impairment in PD. Recently, two key regions for cognitive action control have been identified within the right dlPFC by co-activation based parcellation. While the posterior region is engaged in rather basal EF like stimulus integration and working memory, the anterior region has a more abstract, supervisory function...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28596093/a-pilot-study-evaluating-the-association-between-physical-activity-and-cognition-among-individuals-with-parkinson-s-disease
#5
Paul D Loprinzi, Megan M Danzl, Elizabeth Ulanowski, Calli Paydo
BACKGROUND: Few studies have examined the association between daily physical activity and cognitive function among older adults with Parkinson's disease (PD). OBJECTIVE: Here we evaluate the association between accelerometer-assessed physical activity and cognition among older patients with PD. METHODS: Cognition assessed via the Montreal Cognitive Assessment (MoCA). Moderate-to-vigorous physical activity (MVPA) was assessed via accelerometry over a 1-2 week monitoring period...
June 1, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28582689/the-impact-of-white-matter-lesions-on-the-cognitive-outcome-of-subthalamic-nucleus-deep-brain-stimulation-in-parkinson-s-disease
#6
J Blume, M Lange, E Rothenfusser, C Doenitz, U Bogdahn, A Brawanski, J Schlaier
OBJECTIVES: White Matter lesions (WML) are a risk factor for cognitive impairment in Parkinson's disease. There is no clear evidence of reduced general cognitive function after DBS. However, a subgroup of patients develops dementia rapidly after DBS despite careful patient selection processes. The aim of this study was to evaluate the load of WML as a possible risk factor for cognitive decline following STN DBS. PATIENTS AND METHODS: 40 PD-patients receiving bilateral STN-DBS were followed at least three years after surgery to detect dementia...
May 31, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28566954/demonstration-of-early-cognitive-impairment-in-parkinson-s-disease-with-visual-p300-responses
#7
Gülin Özmüş, Deniz Yerlikaya, Arife Gökçeoğlu, Derya Durusu Emek Savaş, Raif Çakmur, Beril Dönmez Çolakoğlu, Görsev G Yener
INTRODUCTION: Parkinson's disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease. Cognitive changes in PD are less observable than motor symptoms; thus, research on cognitive processes, which are known to be impaired from the early stages of PD, is minimal. The purpose of this study is to research the brain dynamics of cognitively normal PD patients and healthy elderly controls using event-related potentials (ERPs) and to evaluate their relationships with neuropsychological tests...
March 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28550072/plasma-%C3%AE-synuclein-predicts-cognitive-decline-in-parkinson-s-disease
#8
Chin-Hsien Lin, Shieh-Yueh Yang, Herng-Er Horng, Che-Chuan Yang, Jen-Jie Chieh, Hsin-Hsien Chen, Bing-Hsien Liu, Ming-Jang Chiu
OBJECTIVE: α-Synuclein is critical to the pathogenesis of Parkinson's disease (PD). Few studies examined the plasma levels of α-synuclein due to the exceptionally low level of α-synuclein in plasma compared with cerebrospinal fluid. We aimed to investigate plasma α-synuclein in patients with PD of different disease severity. METHODS: There were total 114 participants, including 80 patients with PD and 34 controls, in the study. Participants received a complete evaluation of motor and non-motor symptoms, including cognitive function...
May 26, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28534428/clinimetric-validity-of-the-trail-making-test-czech-version-in-parkinson-s-disease-and-normative-data-for-older-adults
#9
Ondrej Bezdicek, Hana Stepankova, Bradley N Axelrod, Tomas Nikolai, Zdenek Sulc, Robert Jech, Evžen Růžička, Miloslav Kopecek
OBJECTIVE: The influence of demographic variables on the Trail Making Test (TMT) performance in older individuals and empirical findings on clinical validity in predementia states, such as Parkinson's disease mild cognitive impairment (PD-MCI), are limited. The principal aim of this study was to add normative data for the Czech population of older adults and explore the clinimetric properties between PD-MCI and PD patients with normal cognition (PD-NC). METHOD: The study included 125 PD patients classified as 77 PD-MCI and 48 PD-NC and 528 older individuals (60-74 years, further subdivided for normative tables into 60-64, 65-69 and 70-74 age groups) and very old individuals (aged 75-96, further subdivided into 75-79, 80-84, 85-96) cognitively intact Czech adults...
May 23, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28516474/relationship-between-pain-and-motor-and-non-motor-symptoms-in-parkinson-s-disease
#10
G Defazio, A Antonini, M Tinazzi, A F Gigante, S Pietracupa, R Pellicciari, M Bloise, R Bacchin, A Marcante, G Fabbrini, A Berardelli
BACKGROUND AND PURPOSE: Although female gender, depressive symptoms and medical conditions predisposing to pain are more common in patients with Parkinson's disease (PD) with pain, no study has yet explored the relationship between pain and other non-motor symptoms (NMS). METHODS: A total of 321 consecutive patients with PD [190 men/131 women aged 68.3 (SD 9.2) years] attending four Italian movement disorder clinics were studied. Demographic/clinical data were obtained by a standardized interview and the NMS scale...
May 18, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28439757/when-is-higher-level-cognitive-control-needed-for-locomotor-tasks-among-patients-with-parkinson-s-disease
#11
Inbal Maidan, Hagar Bernad-Elazari, Nir Giladi, Jeffrey M Hausdorff, Anat Mirelman
Turning has been implicated as a complex task that requires both motor and cognitive resources. Accumulating evidence shows that patients with Parkinson's disease (PD) require more steps and more time to complete a turn, however, the role of the prefrontal cortex during turning is not clear. Forty nine patients with PD without freezing of gait (mean age 71.7 ± 1.0 years; 67% men, disease duration 9.7 ± 1.3 years) performed motor and cognitive tests. Prefrontal activation, specifically in Brodmann area 10 (BA10), during turning and usual walking was measured using functional near infrared spectroscopy (fNIRS)...
April 24, 2017: Brain Topography
https://www.readbyqxmd.com/read/28387438/the-cognitive-footprint-of-psychiatric-and-neurological-conditions-cross-sectional-study-in-the-uk-biobank-cohort
#12
B Cullen, D J Smith, I J Deary, J J Evans, J P Pell
OBJECTIVE: We aimed to quantify the prevalence of cognitive impairment in adults with a history of mood disorder, schizophrenia, multiple sclerosis or Parkinson's disease, within a large general population cohort. METHOD: Cross-sectional study using UK Biobank data (n = 502 642). Psychiatric and neurological exposure status was ascertained via self-reported diagnoses, hospital records and questionnaires. Impairment on reasoning, reaction time and memory tests was defined with reference to a single unexposed comparison group...
June 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28341039/cognitive-impairment-and-bdnf-serum-levels
#13
Joanna Siuda, Maja Patalong-Ogiewa, Weronika Żmuda, Magdalena Targosz-Gajniak, Ewa Niewiadomska, Iwona Matuszek, Halina Jędrzejowska-Szypułka, Monika Rudzińska-Bar
BACKGROUND/AIMS: To investigate the alterations of brain-derived neurotrophic factor (BNDF) serum levels in subjects with different intensity of cognitive impairment and different neurodegenerative processes. MATERIAL AND METHODS: Serum BDNF levels were analyzed by ELISA kit in 378 subjects: 134 Alzheimer's disease (AD) patients, 115 amnestic mild cognitive impairment (MCI) patients, and 129 controls divided into two groups: neurodegenerative control group (ND), consisting of 49 Parkinson's disease patients without any cognitive complaints, and cognitively normal control group (CN), consisting of 80 subjects without any neurological disorders...
January 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28334403/cognitive-estimation-in-non-demented-parkinson-s-disease
#14
Federica Scarpina, Alessandro Mauro, Guido E D'Aniello, Giovani Albani, Gianluca Castelnuovo, Erika Ambiel, Sarah E MacPherson
Objective: The Cognitive Estimation Test (CET) is widely used in clinical and research settings to assess the ability to produce reasonable estimates to items that individuals would not know that the exact answer (e.g., "How fast do race horses run?"). We examined the performance of non-demented Parkinson's disease (PD) patients on the CET, because previous studies reported heterogeneous results about possible cognitive estimation impairments in PD. We also examined whether PD patients improve their performance if given the chance to reconsider their initial CET responses...
June 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28276860/a-parsimonious-scoring-and-normative-calculator-for-the-parkinson-s-disease-mild-cognitive-impairment-battery
#15
Ondrej Bezdicek, Zdenek Sulc, Tomas Nikolai, Hana Stepankova, Miloslav Kopecek, Robert Jech, Evžen Růžička
OBJECTIVE: The aim of the present study was to provide a regression-based calculator that takes premorbid functioning into account to detect subtle cognitive decline, as is often present in pre-dementia states, especially mild cognitive impairment in Parkinson's disease (PD-MCI). METHOD: We used demographic adjustments based on sex, age, and education of 699 normative participants that fulfilled exclusion criteria for ascertaining the diagnostic accuracy of the Movement Disorders Society PD-MCI battery at Level II...
February 28, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28268523/differences-in-white-matter-microstructure-between-parkinson-s-disease-patients-with-and-without-rem-sleep-behavior-disorder
#16
Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi
REM sleep behavior disorder (RBD) is characterized by increased muscle tone and violent limb movements and usually occurs during the early stages of Parkinson disease (PD). PD patients with RBD represent faster motor progression and cognitive dysfunction. We used diffusion imaging to assess which regions are involved in this phenomenon. In the current study, we computed Quantitative Anisotropic (QA), which is based on spin distribution function (SDF) that quantifies the density of diffusing water and is more sensitive to psychological differences between groups and also diffusion MRI connectometry to conduct group analysis between age and gender matched PD patients with and without RBD...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263252/flexed-truncal-posture-in-parkinson-disease-measurement-reliability-and-relationship-with-physical-and-cognitive-impairments-mobility-and-balance
#17
Aimi L Forsyth, Serene S Paul, Natalie E Allen, Catherine Sherrington, Victor S C Fung, Colleen G Canning
BACKGROUND AND PURPOSE: Flexed truncal posture is common in people with Parkinson disease (PD); however, little is known about the mechanisms responsible or its effect on physical performance. This cross-sectional study aimed to establish the reliability of a truncal posture measurement and explore relationships between PD impairments and truncal posture, as well as truncal posture and balance and mobility. METHODS: A total of 82 people with PD participated. Truncal posture was measured in standing as the distance between vertebra C7 and a wall...
April 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28242255/olfactory-dysfunction-and-dementia-in-newly-diagnosed-patients-with-parkinson-s-disease
#18
Magdalena Eriksson Domellöf, Karl-Fredrik Lundin, Mona Edström, Lars Forsgren
INTRODUCTION: Studies report that up to 90% of patients with idiopathic Parkinson's disease (PD) have olfactory dysfunction (hyposmia). Hyposmia has also been connected to cognitive impairment and dementia in PD, but no studies of newly diagnosed patients followed longer than three years exists. The present study investigates the prevalence of olfactory dysfunction at PD diagnosis, how it evolves over time and whether hyposmia increases the risk of dementia in Parkinson's disease. METHODS: Olfactory function was assessed with Brief Smell Identification Test (B-SIT) in 125 newly diagnosed patients with PD...
May 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28226697/differences-in-white-matter-microstructure-between-parkinson-s-disease-patients-with-and-without-rem-sleep-behavior-disorder
#19
Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi, Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi, Mehdi M Mirbagheri, Farzaneh Rahmani, Atefeh Pooyan, Mina Ansari, Mohammad Hadi Aarabi
REM sleep behavior disorder (RBD) is characterized by increased muscle tone and violent limb movements and usually occurs during the early stages of Parkinson disease (PD). PD patients with RBD represent faster motor progression and cognitive dysfunction. We used diffusion imaging to assess which regions are involved in this phenomenon. In the current study, we computed Quantitative Anisotropic (QA), which is based on spin distribution function (SDF) that quantifies the density of diffusing water and is more sensitive to psychological differences between groups and also diffusion MRI connectometry to conduct group analysis between age and gender matched PD patients with and without RBD...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224328/the-parkinson-s-disease-cognitive-rating-scale-pd-crs-normative-values-from-268-healthy-italian-individuals
#20
Gabriella Santangelo, Giovanna Lagravinese, Valeria Battini, Carlo Chiorri, Mattia Siciliano, Giovanni Abbruzzese, Carmine Vitale, Paolo Barone
The Parkinson's Disease-Cognitive Rating Scale (PD-CRS) is a cognitive screening battery that includes subtests to assess cortical and subcortical functions. It is a valid screening tool for mild cognitive impairment (MCI) in Parkinson's disease (PD) and is recommended for diagnosing PD-MCI-Level I. Until now, no study has provided population-based norms for the Italian population. The aim of the present study was to collect normative values in a sample of Italian healthy subjects. Two hundred and sixty-eight (125 men) participants of different ages (age range 30-79 years) and educational levels (from primary school to university) underwent the PD-CRS...
February 21, 2017: Neurological Sciences
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