articleThe FASEB JournalMar 19, 2004Closed access

Diet‐induced insulin resistance promotes amyloidosis in a transgenic mouse model of Alzheimer's disease

Mount Sinai Hospital · Icahn School of Medicine at Mount Sinai · +1 more institution

PubMed
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Abstract

Recent epidemiological evidence indicates that insulin resistance, a proximal cause of Type II diabetes [a non-insulin dependent form of diabetes mellitus (NIDDM)], is associated with an increased relative risk for Alzheimer's disease (AD). In this study we examined the role of dietary conditions leading to NIDDM-like insulin resistance on amyloidosis in Tg2576 mice, which model AD-like neuropathology. We found that diet-induced insulin resistance promoted amyloidogenic beta-amyloid (Abeta) Abeta1-40 and Abeta1-42 peptide generation in the brain that corresponded with increased gamma-secretase activities and decreased insulin degrading enzyme (IDE) activities. Moreover, increased Abeta production also…

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