Oct 22, 2016

Association of Kidney Function Biomarkers with Brain MRI Findings: The BRINK Study

Journal of Alzheimer's Disease : JAD
Prashanthi VemuriAnne Murray


Chronic kidney disease (CKD) studies have reported variable prevalence of brain pathologies, in part due to low inclusion of participants with moderate to severe CKD. To measure the association between kidney function biomarkers and brain MRI findings in CKD. In the BRINK (BRain IN Kidney Disease) study, MRI was used to measure gray matter volumes, cerebrovascular pathologies (white matter hyperintensity (WMH), infarctions, microhemorrhages), and microstructural changes using diffusion tensor imaging (DTI). We performed regression analyses with estimated glomerular filtration rate (eGFR) and urine albumin to creatinine ratio (UACR) as primary predictors, and joint models that included both predictors, adjusted for vascular risk factors. We obtained 240 baseline MRI scans (150 CKD with eGFR <45 in ml/min/1.73 m2; 16 mild CKD: eGFR 45-59; 74 controls: eGFR≥60). Lower eGFR was associated with greater WMH burden, increased odds of cortical infarctions, and worsening diffusion changes throughout the brain. In eGFR models adjusted for UACR, only cortical infarction associations persisted. However, after adjusting for eGFR, higher UACR provided additional information related to temporal lobe atrophy, increased WMH, and whole brain mic...Continue Reading

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Mentioned in this Paper

Biological Markers
Kidney Function Tests
Brain Diseases
Magnetic Resonance Imaging
Chronic Kidney Insufficiency
Blood Vessel
Malignant Neoplasm of Temporal Lobe

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