application) There is evidence from a multicenter clinical trial that vitamin E slows the rate of clinical deterioration in individuals with moderately severe Alzheimer s disease (AD). The AD Cooperative Study (ADCS) is now mounting a large study to test the effects of vitamin E in persons at the earliest stage of cognitive deterioration. Older individuals with Down syndrome (DS) are at very high risk for AD. Most individuals with DS develop functional decline and show neuropathological evidence of AD by the sixth decade. The applicants propose an international multicenter randomized double-blind study to determine whether vitamin E supplementation will slow the rate of cognitive/functional decline in individuals with DS. Subjects with DS who are at least 50 years of age will be randomized into two treatment groups: vitamin E 2000 IU plus a multivitamin per day or placebo plus multivitamin. The multivitamin contains vitamin E 15 IU. The treatment period will be three years with evaluation visits every six months. The primary outcome measure will be a three year change score on a cognitive/functional measure that was derived for this purpose from the DYSPRAXIA Scale for Adults with Down Syndrome. Secondary outcome measures will include additional cognitive tests as well as informant-based measures of function and behavior.

Agency
National Institute of Health (NIH)
Institute
National Institute on Aging (NIA)
Type
Research Project (R01)
Project #
1R01AG016381-01A1
Application #
2908832
Study Section
Special Emphasis Panel (ZAG1-BJS-3 (M2))
Program Officer
Buckholtz, Neil
Project Start
2000-09-30
Project End
2005-08-31
Budget Start
2000-09-30
Budget End
2001-08-31
Support Year
1
Fiscal Year
2000
Total Cost
$1,465,174
Indirect Cost
Name
Institute for Basic Research in Dev Disabil
Department
Type
DUNS #
167205090
City
Staten Island
State
NY
Country
United States
Zip Code
10314
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