Abstract
Objective: Type 2 diabetes is associated with cognitive dysfunction, but the mechanisms are unknown. We assessed the relationships of biomarkers of oxidation, endothelial function and inflammation with cognition in participants of the CAROLINA® trial (CARdiovascular Outcome Trial of LINAgliptin Versus Glimepiride in Type 2 Diabetes). Methods: Baseline circulating biomarkers of oxidation (8-iso-prostaglandin F2α), endothelial function (asymmetric dimethylarginine, endothelin-1) and inflammation (C-reactive protein, interleukin-6, tumour necrosis factor-α), based on linear regression, were related to cognition on five domains, as measured with an automated battery. Results: In 37 patients (mean age 66.7 ± 8.7 years, median HbA1c 6.9%/52 mmol/mol), 8-iso-prostaglandin F2α was associated with reduced mental flexibility and attention (standardised regression coefficients −0.47, −0.34), whereas asymmetric dimethylarginine was associated with reduced psychomotor speed and attention (standardised regression coefficients −0.39, −0.34). No significant associations were observed between biomarkers of inflammation and cognition. Conclusion: Elevated biomarkers of oxidation and endothelial function are associated and may play a role in reduced psychomotor speed, mental flexibility and attention in type 2 diabetes.
Original language | English |
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Pages (from-to) | 577-581 |
Number of pages | 5 |
Journal | Diabetes and Vascular Disease Research |
Volume | 16 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Nov 2019 |
Keywords
- circulating biomarkers
- cognitive dysfunction
- endothelial dysfunction
- oxidative stress
- Type 2 diabetes
- Diabetes Mellitus, Type 2/blood
- Endothelium, Vascular/metabolism
- Oxidative Stress
- Humans
- Middle Aged
- Risk Factors
- Male
- Cognition
- Cytokines/blood
- Randomized Controlled Trials as Topic
- Inflammation Mediators/blood
- Cognitive Dysfunction/blood
- Biomarkers/blood
- Female
- Aged