The Vanderbilt Memory & Aging Project: Study Design and Baseline Cohort Overview

Angela L. Jefferson, Katherine A. Gifford, Lealani Mae Y. Acosta, Susan P. Bell, Manus J. Donahue, L. Taylor Davis, Joann Gottlieb, Deepak K. Gupta, Timothy J. Hohman, Elizabeth M. Lane, David J. Libon, Lisa A. Mendes, Kevin Niswender, Kimberly R. Pechman, Swati Rane, Frederick L. Ruberg, Yan Ru Su, Henrik Zetterberg, Dandan Liu

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Background: Vascular health factors frequently co-occur with Alzheimer's disease (AD). A better understanding of how systemic vascular and cerebrovascular health intersects with clinical and pathological AD may inform prevention and treatment opportunities. Objective:To establish the Vanderbilt Memory & Aging Project, a case-control longitudinal study investigating vascular health and brain aging, and describe baseline methodology and participant characteristics. Methods: From September 2012 to November 2014, 335 participants age 60- 92 were enrolled, including 168 individuals with mild cognitive impairment (MCI, 73±8 years, 41 female) and 167 age-, sex-, and race-matched cognitively normal controls (NC, 72±7 years, 41 female). At baseline, participants completed a physical and frailty examination, fasting blood draw, neuropsychological assessment, echocardiogram, cardiac MRI, and brain MRI. A subset underwent 24-hour ambulatory blood pressure monitoring and lumbar puncture for cerebrospinal fluid (CSF) collection. Results: As designed, participant groups were comparable for age (p = 0.31), sex (p = 0.95), and race (p = 0.65). MCI participants had greater Framingham Stroke Risk Profile scores (p = 0.008), systolic blood pressure values (p = 0.008), and history of left ventricular hypertrophy (p = 0.04) than NC participants. As expected, MCI participants performed worse on all neuropsychological measures (p-values < 0.001), were more likely to be APOE ϵ4 carriers (p = 0.02), and had enhanced CSF biomarkers, including lower Aβ42 (p = 0.02), higher total tau (p = 0.004), and higher p-tau (p = 0.02) compared to NC participants. Conclusion:Diverse sources of baseline and longitudinal data will provide rich opportunities to investigate pathways linking vascular and cerebrovascular health, clinical and pathological AD, and neurodegeneration contributing to novel strategies to delay or prevent cognitive decline.

Original languageEnglish (US)
Pages (from-to)539-559
Number of pages21
JournalJournal of Alzheimer's Disease
Volume52
Issue number2
DOIs
StatePublished - May 10 2016

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Clinical Psychology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health

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