Oxidative stress and endothelial dysfunction are associated with reduced cognition in type 2 diabetes

Onno N. Groeneveld*, Esther van den Berg, Odd Erik Johansen, Sven Schnaidt, Karin Hermansson, Bernard Zinman, Mark A. Espeland, Geert Jan Biessels

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)577-581
Number of pages5
JournalDiabetes and Vascular Disease Research
Volume16
Issue number6
DOIs
Publication statusPublished - 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

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