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[Uric acid, atherosclerosis and vascular calcifications in chronic kidney disease]

Luis D'Marco1, Irene García, Claudia Vega

  • 1Hospital Universitario Ruiz y Páez, Servicio de Nefrología, Ciudad Bolívar, Caracas, Venezuela. luisgerardodg@hotmail.com

Investigacion Clinica
|April 25, 2012
PubMed

Insights

High uric acid levels in dialysis patients with chronic kidney disease (CKD) are linked to vascular calcification and increased cardiovascular risk. Monitoring uric acid may help predict adverse events in CKD patients.

Area of Science:

  • Nephrology
  • Cardiology
  • Vascular Biology

Context:

  • Cardiovascular disease (CVD) increases mortality in chronic kidney disease (CKD) patients.
  • Vascular complications, including calcification and atherosclerosis, are primary drivers of CVD in CKD.
  • Recent research highlights the association between uric acid levels and cardiovascular risk.

Purpose:

  • To investigate the relationship between vascular calcification (VC) and atherosclerosis, assessed via carotid ultrasound, and serum uric acid levels in dialysis-dependent CKD patients.
  • To determine if elevated uric acid levels correlate with VC and adverse cardiovascular outcomes in this population.

Summary:

  • Vascular calcification was present in 56% of patients, and 46% showed atherosclerosis.
  • Hypertension and diabetes were associated with increased VC susceptibility.
  • Elevated urea and uric acid levels significantly correlated with the presence of VC (p=0.01 and p=0.04, respectively).
  • Adverse cardiovascular events were more common in patients with atherosclerosis and VC (p=0.01).

Impact:

  • This study demonstrates that uric acid levels exceeding 6 mg/dL are associated with a higher risk of vascular calcification and cardiovascular adverse events in CKD patients undergoing dialysis.
  • Findings suggest that uric acid may serve as a predictive biomarker for cardiovascular complications in CKD patients on dialysis.

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