PURPOSE: To explore the relationship between cognitive impairment and insulin resistance (IR) in elderly patients with type-2 diabetes mellitus. MATERIALS AND METHODS: Two hundred and twelve elderly patients with type-2 diabetes were enrolled in this study and assigned into either the cognitive impairment group (n = 100) or the normal cognitive group (n = 112). Gender, age, education, body mass index (BMI), total cholesterol, triglyceride, low-density lipoprotein cholesterol, creatinine (Cr), fasting plasma glucose, fasting insulin (FINS) and homeostasis model of assessment for IR index (HOMA-IR) were compared between the two groups. Multifactorial logistic regression analysis was performed. RESULTS: , p < 0.01], FINS [(21.8 ± 5.3) mU/L vs (12.9 ± 3.9) mU/L, p < 0.01], HOMA-IR [(6.9 ± 1.7) vs (3.9 ± 0.9), p < 0.01] were higher than the control group. In the logistic regression, education level (B = -0.996, p = 0.03), FINS (B = 1.120, p < 0.01) and HOMA-IR (B = 1.301, p < 0.01) were independent factors. CONCLUSIONS: Our study demonstrates that the education level, FINS and HOMA-IR were independent factors of cognitive impairment in elderly patients with type-2 diabetes. IR is an important risk factor and higher education level in a protective factor for the cognitive impairment in elderly patients with type-2 diabetes.
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Ma et al. (2017) studied this question.
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