Chronic kidney disease and cognitive decline in patients with type 2 diabetes at elevated cardiovascular risk

Aims: We addressed the question whether chronic kidney disease (CKD) may contribute to cognitive decline in type 2 diabetes. Methods: Participants with type 2 diabetes with elevated cardiovascular risk or CKD from cognition substudies of two large trials were studied prospectively (CARMELINA: n = 2666, mean ± SD age 68.1 ± 8.7 years, CAROLINA: n = 4296; 64.7 ± 9.4 years). Estimated glomerular filtration rate (eGFR) and urine albumin-to-creatinine ratio (UACR) at baseline were related to cognitive performance (Mini-Mental State Examination (MMSE) and attention and executive functioning score (A&E)) in linear regression analyses, adjusted for demographics, cardiovascular risk factors and treatment, at baseline and follow-up. Results: CKD at baseline was more common in CARMELINA than CAROLINA (eGFR