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Activities of Daily Living and Depressive Symptoms in Patients with Subjective Cognitive Decline, Mild Cognitive Impairment, and Alzheimer’s Disease

Authors :
Andreas Gleiss
Doris Moser
Elisabeth Stögmann
Gisela Pusswald
Peter Dal-Bianco
Johann Lehrner
Stefanie Klug
Eduard Auff
Source :
Journal of Alzheimer's Disease. 49:1043-1050
Publication Year :
2016
Publisher :
IOS Press, 2016.

Abstract

Background: Subjective cognitive decline (SCD) may be an early indicator for an increased risk of dementia. The exact definition of SCD remains unclear and has recently become a major research interest. Objectives: To determine impairments in activities of daily living (ADL) and depressive symptoms in elderly individuals with SCD, mild cognitive impairment (MCI), and Alzheimer’s disease (AD). Methods: We included 752 consecutive patients suffering from SCD, non-amnestic (naMCI) or amnestic MCI (aMCI), AD, and 343 healthy controls into this prospective cohort study. A neuropsychological test battery, B-ADL and BDI-II was performed. Results: SCD patients showed a decreased performance in ADL compared to controls. Performance in ADL declined concurrently with cognitive abilities along the controls−SCD−naMCI−aMCI−AD continuum. Individuals with cognitive complains, no matter if SCD, MCI, or AD patients, reported more often depressive symptoms compared to healthy controls without complaints. Within all five cognitive subgroups, patients with depressive symptoms reported more difficulties in ADL in comparison to patients without depressive symptoms. Adjusting for depressive symptoms, there was no significant group difference between the control versus the SCD group (OR 1.1, CI 0.6–1.7). Conclusions: SCD is a heterogeneous clinical condition. Specific features such as slightly impaired ADL and depressive symptoms are associated with SCD. Clinical markers may serve as an indicator for preclinical AD and in combination with biomarkers guide to an early diagnosis of a progressive neurodegenerative disease.

Details

ISSN :
18758908 and 13872877
Volume :
49
Database :
OpenAIRE
Journal :
Journal of Alzheimer's Disease
Accession number :
edsair.doi.dedup.....6e785be7b8d539f66731ef56c24634de
Full Text :
https://doi.org/10.3233/jad-150785