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Assessment of Vascular Function in Patients With Chronic Kidney Disease
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Assessment of Vascular Function in Patients With Chronic Kidney Disease

Published on: June 16, 2014

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Albuminuria and Endothelial Dysfunction in Patients with Non-Diabetic Chronic Kidney Disease

Meng-Jie Huang1, Ri-Bao Wei1, Jing Zhao1

  • 1Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China (mainland).

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
|September 16, 2017
PubMed

Insights

Higher urine albumin-to-creatinine ratio (UACR) in chronic kidney disease (CKD) patients is linked to increased markers of endothelial dysfunction and inflammation, independent of kidney function. This suggests UACR may reflect underlying vascular issues in CKD.

Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Vascular Biology

Background:

  • Albuminuria is linked to cardiovascular events, but its connection to endothelial dysfunction in chronic kidney disease (CKD) remains unclear.
  • Understanding this link is crucial for managing cardiovascular risk in CKD patients.

Purpose of the Study:

  • To investigate the association between urine albumin-to-creatinine ratio (UACR) and biomarkers of endothelial dysfunction.
  • To evaluate procoagulant and inflammatory factors in relation to UACR and renal dysfunction in CKD patients.

Main Methods:

  • Cross-sectional study of 151 CKD patients (stages 3-5).
  • Analysis of UACR and estimated glomerular filtration rate (eGFR) against procoagulant (von Willebrand factor antigen, vWF activity, factor VIII) and inflammatory markers (interleukin-2, interleukin-6).
  • Statistical analysis including linear regression and factorial design ANOVA.

Main Results:

  • Higher UACR correlated with increased levels of vWF:Ag, vWF activity, factor VIII, IL-2, and log(IL-6), even after adjusting for risk factors.
  • A 88.5 mg/g increase in UACR was associated with an 8.3% rise in vWF activity and a 6.3% rise in factor VIII.
  • No significant interaction was found between UACR and CKD stage regarding procoagulant and inflammatory factors.

Conclusions:

  • Elevated UACR is independently associated with increased markers of endothelial dysfunction and inflammation in CKD patients.
  • These findings suggest that UACR may serve as a marker for endothelial dysfunction beyond its role as an indicator of kidney damage.
  • Further research is warranted to explore the clinical implications of this association for cardiovascular risk stratification in CKD.

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