scholarly journals Motor Dysfunction Questionnaire and Dopamine Transporter Imaging Composite Scale Improve Differentiating Dementia With Lewy Bodies From Alzheimer's Disease With Motor Dysfunction

2021 ◽  
Vol 13 ◽  
Author(s):  
Pai-Yi Chiu ◽  
Cheng-Yu Wei ◽  
Guang-Uei Hung ◽  
Shey-Lin Wu
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dopamine Transporter ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Motor Dysfunction ◽  
Dual Model ◽  
The Novel ◽  
Composite Scale ◽  
Cutoff Scores

Objective: Characteristic parkinsonism is the major comorbidity of dementia with Lewy bodies (DLB). We aimed to differentiate DLB from Alzheimer's disease (AD) with motor dysfunction using a composite scale with a characteristic motor dysfunction questionnaire (MDQ) and dopamine transporter (DAT) imaging. It could help detect DLB easily in healthcare settings without movement disorder specialists.Methods: This is a two-phase study. In the design phase, seven questions were selected and composed of a novel MDQ. In the test phase, all participants with DLB, AD, or non-dementia (ND) control completed dementia and parkinsonism survey, the novel designed questionnaire, DAT imaging, and composite scales of MDQ and DAT. The cutoff scores of the MDQ, semiquantitative analysis of the striatal–background ratio (SBR) and visual rating of DAT, and the composite scale of MDQ and DAT for discriminating DLB from AD or ND were derived and compared.Results: A total of 277 participants were included in this study (126 with DLB, 86 with AD, and 65 with ND). Compared with the AD or ND groups, the DLB group showed a significantly higher frequency in all seven items in the MDQ and a significantly lower SBR. For discrimination of DLB from non-DLB with MDQ, SBR, and composite scale, the cutoff scores of 3/2, 1.37/1.38, and 6/5 were suggested for the diagnosis of DLB with the sensitivities/specificities of 0.91/0.72, 0.91/0.80, and 0.87/0.93, respectively. The composite scale significantly improved the accuracy of discrimination compared with either the MDQ or SBR.Conclusion: This study showed that the novel designed simple questionnaire was a practical screening tool and had similar power to DAT scanning to detect DLB. The questionnaire can be applied in clinical practice and population studies for screening DLB. In addition, the composite scale of MDQ and DAT imaging further improved the diagnostic accuracy, indicating the superiority of the dual-model diagnostic tool.

scholarly journals Convergence of pathology in dementia with Lewy bodies and Alzheimer’s disease: a role for the novel interaction of alpha-synuclein and presenilin 1 in disease

Brain ◽  
2014 ◽  
Vol 137 (7) ◽  
pp. 1958-1970 ◽  
Author(s):  
Ashley R. Winslow ◽  
Simon Moussaud ◽  
Liya Zhu ◽  
Katherine L. Post ◽  
Dennis W. Dickson ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Alpha Synuclein ◽  
Presenilin 1 ◽  
The Novel

Dementia with Lewy bodies versus Alzheimer's disease: Role of dopamine transporter imaging

2003 ◽  
Vol 18 (S7) ◽  
pp. S34-S38 ◽  
Author(s):  
Durval C. Costa ◽  
Zuzana Walker ◽  
Rodney W.H. Walker ◽  
Fl�via R.G. Fontes
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dopamine Transporter ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Dopamine Transporter Imaging

Quantitative Measurements of Motor Function in Alzheimer’s Disease, Frontotemporal Dementia, and Dementia with Lewy Bodies: A Proof-of-Concept Study

2018 ◽  
Vol 46 (3-4) ◽  
pp. 168-179 ◽  
Author(s):  
Frederikke Jeppesen Kragh ◽  
Marie Bruun ◽  
Esben Budtz-Jørgensen ◽  
Lena Elisabeth Hjermind ◽  
Robin Schubert ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Frontotemporal Dementia ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Cross Sectional Study ◽  
Cognitive Testing ◽  
Motor Dysfunction ◽  
Cross Sectional ◽  
Quantitative Measurements

Background: This study examines the efficacy of using quantitative measurements of motor dysfunction, compared to clinical ratings, in Alzheimer’s disease (AD), frontotemporal dementia (FTD), and dementia with Lewy bodies (DLB). Methods: In this cross-sectional study, 49 patients with a diagnosis of AD (n = 17), FTD (n = 19), or DLB (n = 13) were included and underwent cognitive testing, clinical motor evaluation, and quantitative motor tests: pronation/supination hand tapping, grasping and lifting, and finger and foot tapping. Results: Our results revealed significantly higher Q-Motor values in pronation/supination and in grip lift force assessment in AD, FTD, and DLB compared to healthy controls (HC). Q-Motor values detected significant differences between AD and HC, while clinical ratings did not. Conclusion: Our results suggest that quantitative measurements provide more objective and sensitive measurements of motor dysfunction in dementia.

Generalized Rhythmic Delta Activity Frontally Predominant Differentiates Dementia With Lewy Bodies From Alzheimer's Disease and Parkinson's Disease Dementia: A Conventional Electroencephalography Visual Analysis

2021 ◽  
pp. 155005942199714
Author(s):  
Lucia Zinno ◽  
Anna Negrotti ◽  
Chiara Falzoi ◽  
Giovanni Messa ◽  
Matteo Goldoni ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Parkinson’S Disease ◽  
Alzheimer's Disease ◽  
Parkinson's Disease ◽  
Cognitive Impairment ◽  
Dementia With Lewy Bodies ◽  
Visual Analysis ◽  
Lewy Bodies ◽  
Delta Activity ◽  
Rhythmic Delta Activity

Introduction. An easily accessible and inexpensive neurophysiological technique such as conventional electroencephalography may provide an accurate and generally applicable biomarker capable of differentiating dementia with Lewy bodies (DLB) from Alzheimer’s disease (AD) and Parkinson’s disease-associated dementia (PDD). Method. We carried out a retrospective visual analysis of resting-state electroencephalography (EEG) recording of 22 patients with a clinical diagnosis of 19 probable and 3 possible DLB, 22 patients with probable AD and 21 with PDD, matched for age, duration, and severity of cognitive impairment. Results. By using the grand total EEG scoring method, the total score and generalized rhythmic delta activity frontally predominant (GRDAfp) alone or, even better, coupled with a slowing of frequency of background activity (FBA) and its reduced reactivity differentiated DLB from AD at an individual level with an high accuracy similar to that obtained with quantitative EEG (qEEG). GRDAfp alone could also differentiate DLB from PDD with a similar level of diagnostic accuracy. AD differed from PDD only for a slowing of FBA. The duration and severity of cognitive impairment did not differ between DLB patients with and without GRDAfp, indicating that this abnormal EEG pattern should not be regarded as a disease progression marker. Conclusions. The findings of this investigation revalorize the role of conventional EEG in the diagnostic workup of degenerative dementias suggesting the potential inclusion of GRDAfp alone or better coupled with the slowing of FBA and its reduced reactivity, in the list of supportive diagnostic biomarkers of DLB.

Quantitative gait analysis in patients with dementia with Lewy bodies and Alzheimer's disease

2007 ◽  
Vol 26 (3) ◽  
pp. 414-419 ◽  
Author(s):  
John R. Merory ◽  
Joanne E. Wittwer ◽  
Christopher C. Rowe ◽  
Kate E. Webster
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Gait Analysis ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Quantitative Gait Analysis

Anosognosia for memory in dementia with Lewy bodies compared with Alzheimer's disease

2021 ◽  
Author(s):  
Victor Calil ◽  
Andrea Silveira de Souza ◽  
Felipe Kenji Sudo ◽  
Gustavo Santiago‐Bravo ◽  
Naima Assunção ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies

scholarly journals Longitudinal assessment of global and regional atrophy rates in Alzheimer's disease and dementia with Lewy bodies

2015 ◽  
Vol 7 ◽  
pp. 456-462 ◽  
Author(s):  
Elijah Mak ◽  
Li Su ◽  
Guy B. Williams ◽  
Rosie Watson ◽  
Michael Firbank ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Longitudinal Assessment

A Detailed Phenomenological Comparison of Complex Visual Hallucinations in Dementia With Lewy Bodies and Alzheimer's Disease

1997 ◽  
Vol 9 (4) ◽  
pp. 381-388 ◽  
Author(s):  
Clive Ballard ◽  
Ian McKeith ◽  
Richard Harrison ◽  
John O'Brien ◽  
Peter Thompson ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Dementia With Lewy Bodies ◽  
Lewy Bodies ◽  
Time Of Day ◽  
Visual Hallucinations ◽  
Dementia Patients ◽  
Core Feature ◽  
Definition Of

Visual hallucinations (VH) are a core feature of dementia with Lewy bodies (DLB), but little is known about their phenomenology. A total of 73 dementia patients (42 DLB, 30 Alzheimer's disease [AD], 1 undiagnosed) in contact with clinical services were assessed with a detailed standardized inventory. DLB was diagnosed according to the criteria of McKeith and colleagues, AD was diagnosed using the NINCDS-ADRDA criteria. Autopsy confirmation has been obtained when possible. VH were defined using the definition of Burns and colleagues. Detailed descriptions of hallucinatory experiences were recorded. Annual follow-up interviews were undertaken. The clinical diagnosis has been confirmed in 18 of the 19 cases that have come to autopsy. A total of 93% of DLB patients and 27% of AD patients experienced VH. DLB patients were significantly more likely to experience multiple VH that persisted over follow-up. They were significantly more likely to hear their VH speak but there were no significant differences in the other phenomenological characteristics including whether the hallucinations moved, the time of day that they were experienced, their size, the degree of insight, and whether they were complete. VH may be more likely to be multiple, to speak, and to be persistent in DLB patients. These characteristics could potentially aid accurate diagnosis.

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