Author(s): Saczynski JS, Siggurdsson S, Jonsson PV, Eiriksdottir G, Olafsdottir E,
Abstract Share this page
Abstract OBJECTIVE: To examine the association of glycemic status to magnetic resonance imaging indicators of brain pathological changes. RESEARCH DESIGN AND METHODS: This was a cross-sectional, population-based study of 4,415 men and women without dementia (mean age 76 years) participating in the Age Gene/Environment Susceptibility-Reykjavik Study. Glycemic status groups included the following: type 2 diabetes (self-report of diabetes, use of diabetes medications, or fasting blood glucose > or =7.0 mmol/l [11.1\%]); impaired fasting glucose (IFG) (fasting blood glucose 5.6-6.9 mmol/l [36.2\%]); and normoglycemic (52.7\%). Outcomes were total brain volume, white and gray matter volume, white matter lesion (WML) volume, and presence of cerebral infarcts. RESULTS: After adjustment for demographic and cardiovascular risk factors, participants with type 2 diabetes had significantly lower total brain volume (72.2 vs. 71.5\%; P < 0.001) and lower gray and white matter volumes (45.1 vs. 44.9\%, P < 0.01 and 25.7 vs. 25.3\%, P < 0.001, respectively) and were more likely to have single (odds ratio 1.45 [95\% CI 1.14-1.85]) or multiple (2.27 [1.60-3.23]) cerebral infarcts compared with normoglycemic participants. Longer duration of type 2 diabetes was associated with lower total brain volume and gray and white matter volume, higher WML volume (all P(trend) < 0.05), and a greater likelihood of single and multiple cerebral infarcts (all P(trend) < 0.01). CONCLUSIONS: Type 2 diabetic participants have more pronounced brain atrophy and are more likely to have cerebral infarcts. Duration of type 2 diabetes is associated with brain changes, suggesting that type 2 diabetes has a cumulative effect on the brain.
This article was published in Diabetes Care
and referenced in Journal of Microbial & Biochemical Technology