Skip to main content

Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology.

Publication ,  Journal Article
Plassman, BL; Ford, CB; Smith, VA; DePasquale, N; Burke, JR; Korthauer, L; Ott, BR; Belanger, E; Shepherd-Banigan, ME; Couch, E; Jutkowitz, E ...
Published in: J Alzheimers Dis
2024

BACKGROUND: Elevated amyloid-β (Aβ) on positron emission tomography (PET) scan is used to aid diagnosis of Alzheimer's disease (AD), but many prior studies have focused on patients with a typical AD phenotype such as amnestic mild cognitive impairment (MCI). Little is known about whether elevated Aβ on PET scan predicts rate of cognitive and functional decline among those with MCI or dementia that is clinically less typical of early AD, thus leading to etiologic uncertainty. OBJECTIVE: We aimed to investigate whether elevated Aβ on PET scan predicts cognitive and functional decline over an 18-month period in those with MCI or dementia of uncertain etiology. METHODS: In 1,028 individuals with MCI or dementia of uncertain etiology, we evaluated the association between elevated Aβ on PET scan and change on a telephone cognitive status measure administered to the participant and change in everyday function as reported by their care partner. RESULTS: Individuals with either MCI or dementia and elevated Aβ (66.6% of the sample) showed greater cognitive decline compared to those without elevated Aβ on PET scan, whose cognition was relatively stable over 18 months. Those with either MCI or dementia and elevated Aβ were also reported to have greater functional decline compared to those without elevated Aβ, even though the latter group showed significant care partner-reported functional decline over time. CONCLUSIONS: Elevated Aβ on PET scan can be helpful in predicting rates of both cognitive and functional decline, even among cognitively impaired individuals with atypical presentations of AD.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

J Alzheimers Dis

DOI

EISSN

1875-8908

Publication Date

2024

Volume

97

Issue

3

Start / End Page

1161 / 1171

Location

Netherlands

Related Subject Headings

  • Uncertainty
  • Positron-Emission Tomography
  • Neurology & Neurosurgery
  • Humans
  • Cognitive Dysfunction
  • Cognition
  • Amyloid beta-Peptides
  • Alzheimer Disease
  • 5202 Biological psychology
  • 3209 Neurosciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Plassman, B. L., Ford, C. B., Smith, V. A., DePasquale, N., Burke, J. R., Korthauer, L., … Van Houtven, C. H. (2024). Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology. J Alzheimers Dis, 97(3), 1161–1171. https://doi.org/10.3233/JAD-230950
Plassman, Brenda L., Cassie B. Ford, Valerie A. Smith, Nicole DePasquale, James R. Burke, Laura Korthauer, Brian R. Ott, et al. “Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology.J Alzheimers Dis 97, no. 3 (2024): 1161–71. https://doi.org/10.3233/JAD-230950.
Plassman BL, Ford CB, Smith VA, DePasquale N, Burke JR, Korthauer L, et al. Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology. J Alzheimers Dis. 2024;97(3):1161–71.
Plassman, Brenda L., et al. “Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology.J Alzheimers Dis, vol. 97, no. 3, 2024, pp. 1161–71. Pubmed, doi:10.3233/JAD-230950.
Plassman BL, Ford CB, Smith VA, DePasquale N, Burke JR, Korthauer L, Ott BR, Belanger E, Shepherd-Banigan ME, Couch E, Jutkowitz E, O’Brien EC, Sorenson C, Wetle TT, Van Houtven CH. Elevated Amyloid-β PET Scan and Cognitive and Functional Decline in Mild Cognitive Impairment and Dementia of Uncertain Etiology. J Alzheimers Dis. 2024;97(3):1161–1171.

Published In

J Alzheimers Dis

DOI

EISSN

1875-8908

Publication Date

2024

Volume

97

Issue

3

Start / End Page

1161 / 1171

Location

Netherlands

Related Subject Headings

  • Uncertainty
  • Positron-Emission Tomography
  • Neurology & Neurosurgery
  • Humans
  • Cognitive Dysfunction
  • Cognition
  • Amyloid beta-Peptides
  • Alzheimer Disease
  • 5202 Biological psychology
  • 3209 Neurosciences