Structural MR and amyloid PET imaging have been proposed by the National Institute on Aging as methods to subdivide preclinical Alzheimer Disease (AD) into discrete stages of (1) amyloidosis, followed by (2) amyloidosis plus neurodegeneration, both of which precede (3) subtle cognitive decline, followed by the clinical progression to mild cognitive impairment (MCI) and AD dementia. The HASD Imaging Core will provide MR and PET support to the HASD Projects to test how these proposed stages relate to the transition for normal to impaired cognitive performance (Project 1), sleep disturbance (Project 2), and genetic analyses (Project 3). The following Specific Aims will be pursued: I. Combined PET-MR scanning for brain structure, function, and amyloid pathology. For the entire combined HASD and ADRC cohorts, we will perform brain MRI and florbetapir F18 (AV45) amyloid imaging every three years (200 participants/year). II. Provide data processing for these imaging tests, to include (2a) matched regional volumes, thicknesses, and quantitative PET analyses, (2b) quantitative individual longitudinal participant reports compared normative values generated by the cohort, and (2c) grouped regional reports based on classifications derived from the Projects and Cores. III. Generate an online accessible resource containing source imaging (DICOM), processed imaging, and clinical and biomarker characterization to facilitate data sharing outside of our institution, including contributions to the private-public partnership developed by JC Morris, HASD PI, and T. Benzinger, HASD Imaging Core Leader, with Avid/Lilly. This partnership allows funding for longitudinal MR and amyloid PET imaging for the entire cohort.

Public Health Relevance

Core E: Imaging Project Narrative As instructed by the funding opportunity announcement for this application (PAR-13-329), only the Overall component contains a project narrative. Cores and projects were instructed not to include this section.

Agency
National Institute of Health (NIH)
Institute
National Institute on Aging (NIA)
Type
Research Program Projects (P01)
Project #
2P01AG003991-31A1
Application #
8739014
Study Section
Special Emphasis Panel (ZAG1-ZIJ-4 (M1))
Project Start
Project End
2019-04-30
Budget Start
2014-07-01
Budget End
2015-06-30
Support Year
31
Fiscal Year
2014
Total Cost
$287,633
Indirect Cost
$99,021
Name
Washington University
Department
Type
DUNS #
068552207
City
Saint Louis
State
MO
Country
United States
Zip Code
63130
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