Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease

Elizabeth C. Mormino, Rebecca Betensky, Trey Hedden, Aaron P. Schultz, Andrew Ward, Willem Huijbers, Dorene M. Rentz, Keith A. Johnson, Reisa A. Sperling

Research output: Contribution to journalArticle

Abstract

Objective: To examine whether b-amyloid (Ab) and APOE ε4 status independently contribute or interact to influence longitudinal cognitive decline in clinically normal older individuals (CN). Methods: Data from 490 CNs were aggregated across 3 observational cohort studies (Harvard Aging Brain Study, Alzheimer's Disease Neuroimaging Initiative, and Australian Imaging Biomarkers and Lifestyle Study of Ageing; median age = 75.0 years, 255 female), and the contributions of APOE ε4 and Aβ on longitudinal change over a median of 1.49 years were examined. Cognitive decline was assessed with the Mini-Mental State Examination (MMSE) and Logical Memory (immediate and delayed recall scores). Results: High Aβ participants were more likely to be APOE ε4+ than low Aβ participants. CNs who were both high Aβ and APOE ε4+ showed greater decline in Logical Memory immediate recall (p < 0.087), Logical Memory delayed recall (p < 0.024), and MMSE (p < 0.034) compared to all other groups (low Aβ/APOE ε4-, low Aβ/APOE ε4+, and high Aβ/APOE ε4-). No other pairwise contrast was significant for any cognitive measure. Conclusions: Clinically normal individuals who are APOE ε4+ and have high Aβ showed the highest cognitive decline. These results suggest that Aβ and APOE ε4 are not redundant contributors of decline in aging but rather interact to promote decline during the short follow-up period examined in this study. Longer follow-up periods will be essential to fully elucidate the influence of Alzheimer disease risk factors on cognitive decline in aging.

Original languageEnglish (US)
Pages (from-to)1760-1767
Number of pages8
JournalNeurology
Volume82
Issue number20
DOIs
StatePublished - May 20 2014

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Amyloid
Alzheimer Disease
Repression (Psychology)
Short-Term Memory
Neuroimaging
Observational Studies
Life Style
Cohort Studies
Biomarkers
Cognitive Dysfunction
Brain

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Mormino, E. C., Betensky, R., Hedden, T., Schultz, A. P., Ward, A., Huijbers, W., ... Sperling, R. A. (2014). Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease. Neurology, 82(20), 1760-1767. https://doi.org/10.1212/WNL.0000000000000431

Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease. / Mormino, Elizabeth C.; Betensky, Rebecca; Hedden, Trey; Schultz, Aaron P.; Ward, Andrew; Huijbers, Willem; Rentz, Dorene M.; Johnson, Keith A.; Sperling, Reisa A.

In: Neurology, Vol. 82, No. 20, 20.05.2014, p. 1760-1767.

Research output: Contribution to journalArticle

Mormino, EC, Betensky, R, Hedden, T, Schultz, AP, Ward, A, Huijbers, W, Rentz, DM, Johnson, KA & Sperling, RA 2014, 'Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease', Neurology, vol. 82, no. 20, pp. 1760-1767. https://doi.org/10.1212/WNL.0000000000000431
Mormino EC, Betensky R, Hedden T, Schultz AP, Ward A, Huijbers W et al. Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease. Neurology. 2014 May 20;82(20):1760-1767. https://doi.org/10.1212/WNL.0000000000000431
Mormino, Elizabeth C. ; Betensky, Rebecca ; Hedden, Trey ; Schultz, Aaron P. ; Ward, Andrew ; Huijbers, Willem ; Rentz, Dorene M. ; Johnson, Keith A. ; Sperling, Reisa A. / Amyloid and APOE ε4 interact to influence short-term decline in preclinical Alzheimer disease. In: Neurology. 2014 ; Vol. 82, No. 20. pp. 1760-1767.
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AU - Ward, Andrew

AU - Huijbers, Willem

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