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  • Title: The role of microalbuminuria and insulin resistance as significant risk factors for white matter lesions in Japanese type 2 diabetic patients.
    Author: Anan F, Masaki T, Iwao T, Eto T, Shimomura T, Umeno Y, Eshima N, Saikawa T, Yoshimatsu H.
    Journal: Curr Med Res Opin; 2008 Jun; 24(6):1561-7. PubMed ID: 18423105.
    Abstract:
    OBJECTIVE: The presence of white matter lesions (WML) is an important prognostic factor for the development of stroke. Microalbuminuria, which is associated with diabetes, has been flagged as a novel predictor for cerebrovascular events. This preliminary study was therefore designed to test the hypothesis that the presence of WML correlates with microalbuminuria and insulin resistance in patients with type 2 diabetic mellitus (DM) not receiving insulin treatment. PATIENTS AND METHODS: Based on brain magnetic resonance imaging (MRI) findings, 90 type 2 diabetic patients were divided into two groups: a WML-positive group (57+/-8 years, mean+/-SD, n=34) and a WML-negative group (57+/-6 years, n=56). The level of blood glucose was assessed by fasting plasma glucose (FPG), fasting immunoreactive insulin (F-IRI), homeostasis model assessment (HOMA) index, and hemoglobin A(1c) (HbA1c). RESULTS: The body mass index was higher in the WML-positive group than in the WML-negative group (p<0.01). Plasma levels of triglycerides were higher while high-density lipoprotein cholesterol (HDL-C) was lower in the WML-positive group than in the WML-negative group (p<0.05 and p<0.0001, respectively). Fasting plasma glucose (p<0.005), insulin concentrations (p<0.0001), HOMA index (p<0.0001), and urinary albumin excretion (p<0.0001) levels were higher in the WML-positive group than in the WML-negative group. Multivariate logistic analysis revealed that WML was independently predicted by the microalbuminuria and insulin resistance (p<0.005, p<0.0005, respectively). CONCLUSION: The results of this preliminary study indicate that the presence of WML was associated with the microalbuminuria and insulin resistance in these Japanese patients with type 2 DM; larger cohort studies are warranted to confirm these findings.
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