alexa Microvascular determinants of cognitive decline and brain volume change in elderly patients with type 2 diabetes.
Medicine

Medicine

Journal of Gerontology & Geriatric Research

Author(s): de Bresser J, Reijmer YD, van den Berg E, Breedijk MA, Kappelle LJ,

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Abstract BACKGROUND/AIMS: The present study examined the relationship between microvascular complications and cognitive decline and the development of structural brain abnormalities over a period of 4 years in patients with type 2 diabetes mellitus (T2DM). METHODS: Sixty-eight elderly patients with T2DM had 2 cognitive assessments with a 4-year interval. Two MRI scans, performed at the same time as the cognitive assessments, were available from 55 patients. Changes in cognitive performance over time were expressed as a regression-based index (RBI). Automated volumetric measurements of total brain, lateral ventricles and white matter hyperintensities were performed. The relationship between baseline microvascular complications [diabetic retinopathy, peripheral neuropathy or albuminuria (micro- or macroalbuminuria)] and cognition and brain volumes was examined with linear regression analyses adjusted for age and sex (for cognition also for IQ). RESULTS: At baseline, diabetic retinopathy was present in 18\% of patients, peripheral neuropathy in 36\%, albuminuria in 15\%. Retinopathy or neuropathy were not significantly associated with baseline cognition or brain volumes, or changes in these measures over time. Albuminuria was associated with a lower composite RBI score, indicating accelerated cognitive decline (adjusted mean difference between patients with or without albuminuria: -0.58, 95\% CI -0.85 to -0.31, p < 0.001). CONCLUSION: Albuminuria predicted accelerated cognitive decline in patients with T2DM, but other microvascular complications were unrelated to accelerated cognitive decline or brain MRI abnormalities. Copyright © 2010 S. Karger AG, Basel. This article was published in Dement Geriatr Cogn Disord and referenced in Journal of Gerontology & Geriatric Research

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