Episodic Memory in Alzheimer Disease, Frontotemporal Dementia, and Dementia With Lewy Bodies/Parkinson Disease Dementia

2016 ◽  
Vol 30 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Alexandra Economou ◽  
Christopher Routsis ◽  
Sokratis G. Papageorgiou
2021 ◽  
pp. 680-688
Author(s):  
Rodolfo Savica ◽  
Pierpaolo Turcano ◽  
Bradley F. Boeve

The differential diagnosis for dementia is wide. A slowly progressive course for parkinsonism suggests a degenerative cause and helps to narrow the differential diagnosis considerably. In patients with dementia in combination with parkinsonism (often collectively termed the parkinsonism-related dementias), the 4 most common neurodegenerative entities are 1) Lewy body dementias (which include dementia with Lewy bodies and Parkinson disease with dementia); 2) corticobasal syndrome or corticobasal degeneration; 3) Richardson syndrome or progressive supranuclear palsy; and 4) frontotemporal dementia with parkinsonism.


2015 ◽  
Vol 23 (2) ◽  
pp. 141-148 ◽  
Author(s):  
David R. Whitfield ◽  
Julie Vallortigara ◽  
Amani Alghamdi ◽  
Tibor Hortobágyi ◽  
Clive Ballard ◽  
...  

2017 ◽  
Vol 79 (1-2) ◽  
pp. 27-32 ◽  
Author(s):  
Shuta Toru ◽  
Tadashi Kanouchi ◽  
Takanori Yokota ◽  
Yosuke Yagi ◽  
Akira Machida ◽  
...  

Objective: We studied autonomic disturbance in patients with dementia with Lewy bodies (DLB), Parkinson disease with dementia (PDD), Alzheimer disease (AD), to determine whether autonomic function tests can be used to distinguish these disorders. Methods: Autonomic function was tested in 56 patients with DLB, 37 patients with PDD, and 59 patients with AD by using the sympathetic skin response, coefficient of variation in R-R interval, the head-up tilt test, serum norepinephrine concentration, and 123I-meta-iodobenzylguanidine cardiac scintigraphy. Symptoms of autonomic dysfunction, such as constipation, urinary symptoms, and orthostatic hypotension, were also noted. Results: The groups did not differ on baseline characteristics other than those associated with Parkinsonism and dementia. All patients with DLB and PDD had some dysautonomia, whereas rates were much lower for patients with AD (19%). Significantly more DLB and PDD patients than AD patients showed abnormalities on autonomic function tests. Conclusions: Autonomic function tests might be quite useful to distinguish DLB and PDD from AD.


Neurology ◽  
2008 ◽  
Vol 70 (4) ◽  
pp. 299-303 ◽  
Author(s):  
G. N. Ransmayr ◽  
S. Holliger ◽  
K. Schletterer ◽  
H. Heidler ◽  
M. Deibl ◽  
...  

2003 ◽  
Vol 16 (2) ◽  
pp. 85-92 ◽  
Author(s):  
Deborah A. Cahn-Weiner ◽  
Karren Williams ◽  
Janet Grace ◽  
Geoffrey Tremont ◽  
Holly Westervelt ◽  
...  

Author(s):  
Lynn Marie Trotti ◽  
Donald L. Bliwise ◽  
Glenda L. Keating ◽  
David B. Rye ◽  
William T. Hu

Background/Aims: Hypocretin promotes wakefulness and modulates REM sleep. Alterations in the hypocretin system are increasingly implicated in dementia. We evaluated relationships among hypocretin, dementia biomarkers, and sleep symptoms in elderly participants, most of whom had dementia. Methods: One-hundred twenty-six adults (mean age 66.2 ± 8.4 years) were recruited from the Emory Cognitive Clinic. Diagnoses were Alzheimer disease (AD; n = 60), frontotemporal dementia (FTD; n = 21), and dementia with Lewy bodies (DLB; n = 20). We also included cognitively normal controls (n = 25). Participants and/or caregivers completed sleep questionnaires and lumbar puncture was performed for cerebrospinal fluid (CSF) assessments. Results: Except for sleepiness (worst in DLB) and nocturia (worse in DLB and FTD) sleep symptoms did not differ by diagnosis. CSF hypocretin concentrations were available for 87 participants and normal in 70, intermediate in 16, and low in 1. Hypocretin levels did not differ by diagnosis. Hypocretin levels correlated with CSF total τ levels only in men (r = 0.34; p = 0.02). Lower hypocretin levels were related to frequency of nightmares (203.9 ± 29.8 pg/mL in those with frequent nightmares vs. 240.4 ± 46.1 pg/mL in those without; p = 0.05) and vivid dreams (209.1 ± 28.3 vs. 239.5 ± 47.8 pg/mL; p = 0.014). Cholinesterase inhibitor use was not associated with nightmares or vivid dreaming. Conclusion: Hypocretin levels did not distinguish between dementia syndromes. Disturbing dreams in dementia patients may be related to lower hypocretin concentrations in CSF.


2019 ◽  
Vol 10 (2) ◽  
pp. 156-161
Author(s):  
Pierpaolo Turcano ◽  
Cole D. Stang ◽  
James H. Bower ◽  
J. Eric Ahlskog ◽  
Bradley F. Boeve ◽  
...  

ObjectiveTo investigate the frequency of levodopa-induced dyskinesia in dementia with Lewy bodies (DLBs) and Parkinson disease with dementia (PDD) and compare these frequencies with patients with incident Parkinson disease (PD) through a population-based cohort study.MethodsWe identified all patients with DLB, PDD, and PD without dementia in a 1991–2010 population-based parkinsonism-incident cohort, in Olmsted County, Minnesota. We abstracted information about levodopa-induced dyskinesia. We compared patients with DLB and PDD with dyskinesia with patients with PD from the same cohort.ResultsLevodopa use and dyskinesia data were available for 141/143 (98.6%) patients with a diagnosis of either DLB or PDD; 87 (61.7%), treated with levodopa. Dyskinesia was documented in 12.6% (8 DLB and 3 PDD) of levodopa-treated patients. Among these patients, median parkinsonism diagnosis age was 74 years (range: 64–80 years); 63.6%, male. The median interval from levodopa initiation to dyskinesia onset was 2 years (range: 3 months–4 years); the median daily levodopa dosage was 600 mg (range: 50–1,600 mg). Dyskinesia severity led to levodopa adjustments in 5 patients, and all improved. Patients with dyskinesia were diagnosed with parkinsonism at a significantly younger age compared with patients without dyskinesia (p < 0.001). Levodopa dosage was unrelated to increased risk of dyskinesias among DLB and PDD. In contrast, 30.1% of levodopa-treated patients with PD developed dyskinesia. In age-, sex-, and levodopa dosage–adjusted models, Patients with DLB and PDD each had lower odds of developing dyskinesia than patients with PD (odds ratio = 0.42, 95% CI 0.21–0.88; p = 0.02).ConclusionsThe dyskinesia risk for levodopa-treated patients with DLB or PDD was substantially less than for levodopa-treated patients with PD.


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