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Cognitive profile of patients with newly diagnosed Parkinson disease
Abstract
OBJECTIVE: To determine the frequency and pattern of cognitive dysfunction in patients with newly diagnosed Parkinson disease (PD) and to identify its demographic and clinical correlates. METHODS: A cohort of 115 consecutive patients with newly diagnosed PD and 70 healthy controls underwent a comprehensive neuropsychological assessment including tests of psychomotor speed, attention, language, memory, executive and visuospatial functions, as well as measures of affective status. Patients also received quantitative ratings of motor symptom severity and functional status. Neuropsychological performance of PD patients was compared with that of healthy controls and with available normative data. Independent demographic and clinical predictors of cognitive impairment were identified with multiple logistic regression analysis. RESULTS: Relative to controls, PD patients performed significantly worse on most cognitive measures. However, further analysis revealed that group differences in cognitive performance could mainly be explained by measures of immediate memory and executive function. Comparison with normative data showed that impairments were most frequent on measures of executive function, memory and psychomotor speed. In all, 24% of PD patients (4% of controls) displayed defective performance on at least three neuropsychological tests and were classified as cognitively impaired. Late onset of disease was an independent predictor of cognitive dysfunction in PD. CONCLUSION: Cognitive impairments are common even in newly diagnosed Parkinson disease patients, with deficits being most prominent in the domains of memory and executive functions. Older age at disease onset is likely to be an important determinant of cognitive dysfunction in Parkinson disease.
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“Mild cognitive impairment (MCI) is already present in about a quarter of patients with early PD.[12][13][14]”
From Does vigorous exercise have a neuroprotective effect in Parkinson disease? (2011) · cites this paper as [14]
In the citing paper
“In these studies, fMRI data suggests that aerobic exercise may generate more efficient neuronal activity in the prefrontal regions similarly affected in PD 65, 66.”
From Exercise-enhanced neuroplasticity targeting motor and cognitive circuitry in Parkinson's disease (2013) · cites this paper as [65]
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Metadata
- Authors
- Muslimović, D., Post, B., Speelman, J. D., & Schmand, B.
- Affiliations
- From the Department of Neurology, Academic Medical Center, University of Amsterdam, the Netherlands; and CARPA Study Group (Drs. Post and Speelman).
- Amsterdam UMC Location University of Amsterdam (NL)
- Venue
- Neurology
- Published
- 2005-10-25
- Volume
- 65
- Issue
- 8
- Pages
- 1239-1245
- ISSN
- 0028-3878 (ISSN-L)
- 1526-632X
- OpenAlex
- W2131881760
- Cited by
- 1,007
- References
- 29
- Citations by year
- 2026: 18 · 2025: 35 · 2024: 30 · 2023: 31 · 2022: 48 · 2021: 58 · 2020: 48 · 2019: 57 · 2018: 57 · 2017: 58 · 2016: 54 · 2015: 67 · 2014: 71 · 2013: 82 · 2012: 62
- FWCI
- 16.66
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurology (publishedVersion)
- PubMed (publishedVersion)
- UvA-DARE (University of Amsterdam) (publishedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Pure Amsterdam UMC (submittedVersion)
- Topics
- Health Sciences › Medicine › Clinical Neurology › Parkinson's Disease Mechanisms and Treatments
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Health Sciences › Medicine › Clinical Neurology › Deep Brain Stimulation and Movement Disorders
- Keywords
- Parkinson's disease, cognitive impairment, executive function, memory impairment, psychomotor speed, age of onset, neuropsychological assessment, newly diagnosed patients
- MeSH terms
- Affective Symptoms, Aged, Cognition Disorders, Female, Humans, Language Disorders, Male, Memory Disorders, Middle Aged, Neuropsychological Tests, Parkinson Disease, Predictive Value of Tests, Psychomotor Performance, Cohort Studies, Comorbidity, Prevalence, Age of Onset
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