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This database contains 38 studies, archived under the term: "parkinson disease"

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Levodopa response in dementia with lewy bodies: a 1-year follow-up study

Purpose: To evaluate levodopa responsiveness in patients with probable dementia with Lewy bodies (DLB) compared to early Parkinson’s disease (PD) patients.; Methods: Twenty four cases with DLB and 21 with PD underwent a baseline assessment with UPDRS (sub-item II and III) and an acute levodopa challenge test. Positive response to acute levodopa test was defined […]

Use of memantine (akatinol) for the correction of cognitive impairments in Parkinson’s disease complicated by dementia

This study addresses the effects of 52 weeks of treatment with the NMDA glutamate receptor antagonist memantine on motor, cognitive, and mental disorders in patients with Parkinson’s disease complicated by dementia, as compared with a control group of patients not treated with memantine. Patients of the experimental group (32 subjects) received memantine (20 mg/day), while […]

The effect of memantine on sleep behaviour in dementia with Lewy bodies and Parkinson’s disease dementia

Objective: Two common and characteristic sleep disturbances have been described in dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD); excessive daytime sleepiness and REM sleep behaviour disorder (RBD). This study is an analysis of a secondary outcome measure of a larger study already reported, aimed to determine whether memantine has an effect on […]

Does auditory rhythmical cueing improve gait in people with Parkinson’s disease and cognitive impairment? A feasibility study

Gait and balance problems resulting from Parkinson’s disease (PD) are more common in people with PD and dementia (PDD), yet, it is unknown whether the benefits of cueing therapy for mobility generalize to them. We aimed to determine the feasibility and effectiveness of auditory cues to improve gait in PD and cognitive impairment (PD-CI). Nine […]

Addenbrooke’s Cognitive Examination validation in Parkinson’s disease

Background: There is a clear need for brief, sensitive and specific cognitive screening instruments in Parkinson’s disease (PD).; Objectives: To study Addenbrooke’s Cognitive Examination (ACE) validity for cognitive assessment of PD patient’s using the Mattis Dementia Rating Scale (MDRS) as reference method. A specific scale for cognitive evaluation in PD, in this instance the Scales […]

Levodopa use and sleep in patients with dementia with Lewy bodies

Sleep disturbance and excessive daytime somnolence (EDS) are features of Parkinson’s disease (PD) and dementia with Lewy bodies (DLB) that may be influenced by dopamine replacement therapy. The effect of levodopa on sleep and EDS in DLB is unknown and unclear in PD. The aim of this study is to determine if levodopa treatment alters […]

Randomized controlled trial of memantine in dementia associated with Parkinson’s disease

The objective of this study is to investigate the safety and tolerability of memantine, a glutamatergic modulator, in patients suffering from dementia associated with Parkinson’s disease (PDD), an increasingly common complication of PD. This was a 22-week trial of 25 participants with a DSM-IV diagnosis of PDD who were randomized to either placebo or 20 […]

Incidence and prediction of falls in dementia: a prospective study in older people

Background: Falls are a major cause of morbidity and mortality in dementia, but there have been no prospective studies of risk factors for falling specific to this patient population, and no successful falls intervention/prevention trials. This prospective study aimed to identify modifiable risk factors for falling in older people with mild to moderate dementia.; Methods […]

Antihypertensive agents and risk of Parkinson’s disease, essential tremor and dementia: a population-based prospective study (NEDICES)

Background: Recent interest in antihypertensive agents, especially calcium channel blockers, has been sparked by the notion that these medications may be neuroprotective. A modest literature, with mixed results, has examined whether these medications might lower the odds or risk of Parkinson’s disease (PD) or dementia. There are no data for essential tremor (ET).; Objective: To […]

Visual hallucinations and altered visual information processing in Parkinson disease and dementia with Lewy bodies

Visual hallucinations (VHs) are common in dementia with Lewy bodies (DLB) and Parkinson’s disease with dementia (PDD), while auditory hallucinations are rare. To neurophysiologically investigate the pathophysiology of VHs in these disorders, we studied event-related potentials (ERPs) of DLB, PDD, and Alzheimer’s disease (AD) patients. We compared visual and auditory ERP latencies among PDD patients […]

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