Effect of intellectual enrichment on AD biomarker trajectories

Prashanthi Vemuri, Timothy G. Lesnick, Scott A. Przybelski, David S. Knopman, Mary Machulda, Val J. Lowe, Michelle M. Mielke, Rosebud O. Roberts, Jeffrey L. Gunter, Matthew L. Senjem, Yonas E. Geda, Walter A. Rocca, Ronald C. Petersen, Clifford R. Jack

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


Objective: To investigate the effect of age, sex, APOE4 genotype, and lifestyle enrichment (education/occupation, midlife cognitive activity, and midlife physical activity) on Alzheimer disease (AD) biomarker trajectories using longitudinal imaging data (brain β-amyloid load via Pittsburgh compound B PET and neurodegeneration via 18 fluorodeoxyglucose (FDG) PET and structural MRI) in an elderly population without dementia. Methods: In the population-based longitudinal Mayo Clinic Study of Aging, we studied 393 participants without dementia (340 clinically normal, 53 mild cognitive impairment; 70 years and older) who had cognitive and physical activity measures and at least 2 visits with imaging biomarkers. We dichotomized participants into high (≥14 years) and low (

Original languageEnglish (US)
Pages (from-to)1128-1135
Number of pages8
Issue number12
StatePublished - Mar 22 2016
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology


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