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BACKGROUND Impaired antioxidant defenses are implicated in neurodegenerative disease. The plasma levels of urate, a water-soluble antioxidant, are reduced in Alzheimer's disease (AD). OBJECTIVE We aimed to test the hypotheses that high plasma urate at baseline is associated with: (1) a reduced rate of conversion from mild cognitive impairment (MCI) to AD(More)
OBJECTIVE To evaluate the safety, tolerability, and amyloid beta (Abeta) response to the gamma-secretase inhibitor LY450139 in Alzheimer disease. DESIGN Multicenter, randomized, double-blind, dose-escalation, placebo-controlled trial. SETTING Community-based clinical research centers. Patients Fifty-one individuals with mild to moderate Alzheimer(More)
OBJECTIVE To investigate differences in visual function between the healthy eyes of people of African (AD) and European descent (ED). METHODS Visual function was assessed in 393 AD and 367 ED participants selected from the African Descent and Glaucoma Evaluation Study and the Diagnostic Innovations in Glaucoma Study. Participants had normal appearance of(More)
This study examines the effects of community-level and individual-level factors on access to ambulatory care for lower-income adults in 54 urban metropolitan statistical areas in the United States. Drawing on a conceptual behavioral and structural framework of access, the authors developed multivariate models for insured and uninsured lower-income adults to(More)
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