Cited by 182Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsHistorical and Modern Theater Studies

Early onset Alzheimer’s disease is associated with a distinct neuropsychological profile

Smits, Lieke L., Pijnenburg, Yolande A.L., Koedam, Esther L.G.E., van der Vlies, Annelies E., Reuling, Ilona E.W., Koene, Teddy, Teunissen, Charlotte E., Scheltens, Philip +1 more·2012·Journal of Alzheimer s Disease

Abstract

Alzheimer's disease (AD) in younger patients is associated with a higher prevalence of atypical symptoms. We examined neuropsychological performance according to age-at-onset. We assessed cognition in 172 patients with AD (81 early and 91 late onset) in five cognitive domains (memory, language, visuo-spatial functioning, executive functioning, attention). Dementia severity was assessed using the Mini-Mental State Examination (MMSE) and global cognitive decline using Cambridge Cognitive Examination (CAMCOG). Analyses of variance were performed with age-at-onset as between-subjects factor, and gender and education as covariates. Analysis was repeated after stratification for dementia severity (based on median MMSE). In early onset AD, age (mean ± SD) was 60 ± 4 years; 44 (54%) were female. In late onset AD, age was 72 ± 5 years; 47 (52%) were female. Dementia severity and global cognitive decline did not differ between groups (early onset: MMSE: 20 ± 5, CAMCOG: 69 ± 15, late onset: MMSE: 21 ± 5, CAMCOG: 70 ± 15; p > 0.05). Early onset patients performed worse than late onset patients on visuo-spatial functioning (p < 0.01), executive functioning (p < 0.001), and attention (p < 0.01). Late onset patients performed worse on memory, although not significantly (p = 0.11). Stratification for dementia severity showed that in mildly demented early onset patients, memory function was remarkably preserved compared to late onset patients (p < 0.01). In moderate AD, differences in memory function disappeared, but early onset patients performed worse on visuo-spatial functioning (p < 0.01), executive functioning (p < 0.001), and attention (p < 0.01) than late onset patients. Adjustment for APOE left results unchanged. In conclusion, early onset AD presents with a different cognitive profile and the disease course seems different. Relative sparing of memory function in early stages stresses the need to adequately test other cognitive domains.

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Crossref · 10.3233/jad-2012-111934

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Authors
Smits, L. L., Pijnenburg, Y. A. L., Koedam, E. L. G. E., van der Vlies, A. E., Reuling, I. E. W., Koene, T., Teunissen, C. E., Scheltens, P., & van der Flier, W. M.
Affiliations
  • Amsterdam UMC Location Vrije Universiteit Amsterdam (NL)
  • Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, the Netherlands
Venue
Journal of Alzheimer s Disease
Published
2012-05-04
Volume
30
Issue
1
Pages
101-108
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1570778022
Cited by
182
References
31
Citations by year
2026: 4 · 2025: 7 · 2024: 9 · 2023: 10 · 2022: 16 · 2021: 10 · 2020: 18 · 2019: 11 · 2018: 9 · 2017: 14 · 2016: 13 · 2015: 26 · 2014: 13 · 2013: 18 · 2012: 4
FWCI
13.89
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • Vanderbilt University Medical Center
  • Stichting Dioraphte
  • Alzheimer Nederland
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Social Sciences › Psychology › Clinical Psychology › Historical and Modern Theater Studies
Keywords
early-onset Alzheimer's disease, late-onset Alzheimer's disease
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Apolipoproteins E, Attention, Cognition Disorders, Dementia, Female, Humans, Language, Male, Memory, Mental Status Schedule, Mutation, Neuropsychological Tests, Retrospective Studies, Space Perception, Age of Onset, Presenilin-1, Executive Function

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