Cognitive function and insulin resistance in elderly patients with type 2 diabetes
1a Xuan Wu Hospital, Department of Geriatrics , Capital Medical University , Beijing , China.
Neurological Research
|January 22, 2017
Summary
Insulin resistance (IR) is a significant risk factor for cognitive impairment in elderly individuals with type-2 diabetes. Higher education levels may offer protection against cognitive decline in this population.
Area of Science:
- Gerontology
- Endocrinology
- Neuroscience
Background:
- Cognitive impairment is a growing concern in aging populations.
- Type-2 diabetes mellitus is increasingly recognized as a potential contributor to cognitive decline.
- Insulin resistance (IR) plays a role in metabolic dysfunction and may impact brain health.
Purpose of the Study:
- To investigate the association between cognitive impairment and insulin resistance (IR) in elderly patients diagnosed with type-2 diabetes mellitus.
- To identify factors associated with cognitive impairment in this specific demographic.
Main Methods:
- A cohort of 212 elderly patients with type-2 diabetes was divided into cognitive impairment (n=100) and normal cognitive (n=112) groups.
- Demographic data, BMI, lipid profiles, creatinine, fasting plasma glucose, fasting insulin (FINS), and HOMA-IR were compared.
- Multifactorial logistic regression analysis was employed to determine independent factors.
Main Results:
- The cognitive impairment group exhibited lower education levels and higher BMI, FINS, and HOMA-IR compared to the normal cognitive group.
- Logistic regression identified education level, FINS, and HOMA-IR as independent factors associated with cognitive impairment.
- Specifically, lower education (B=-0.996, p=0.03), higher FINS (B=1.120, p<0.01), and higher HOMA-IR (B=1.301, p<0.01) were significant predictors.
Conclusions:
- Insulin resistance, indicated by elevated fasting insulin and HOMA-IR, is a significant risk factor for cognitive impairment in elderly patients with type-2 diabetes.
- Higher educational attainment appears to be a protective factor against cognitive impairment in this population.
- These findings highlight the importance of managing IR and promoting education for cognitive health in older adults with diabetes.
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