Association between renal function and arterial stiffness among women with systemic lupus erythematosus or

Ewa Pędzich1, Adrian Bednarek1, Dominika Klimczak-Tomaniak2,3

  • 1First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland.

Cardiology Journal
|July 9, 2025
PubMed

Insights

In women with systemic lupus erythematosus (SLE) or antiphospholipid syndrome (APS), elevated urea and uric acid levels correlate with increased arterial stiffness. These findings highlight potential links between renal function markers and cardiovascular risk in these patient populations.

Area of Science:

  • Cardiovascular Medicine
  • Nephrology
  • Rheumatology

Background:

  • Patients with SLE or APS face heightened risks of atherosclerosis and major adverse cardiac events.
  • The underlying mechanisms linking SLE/APS to cardiovascular complications remain incompletely understood.
  • While renal impairment is recognized in SLE/APS, data on arterial remodeling markers (AI@75, PWV) and renal function are scarce in affected women.

Purpose of the Study:

  • To investigate the association between arterial remodeling parameters (AI@75, PWV) and laboratory markers of renal function in women with SLE and/or APS.
  • To explore the relationship between non-invasive measures of arterial stiffness and renal function tests in this specific patient cohort.

Main Methods:

  • Prospective, cross-sectional study involving women diagnosed with SLE and/or APS.
  • Carotid-femoral pulse wave velocity (PWV) and augmentation index normalized to 75 bpm (AI@75) were measured using pulse wave analysis.
  • Laboratory assessments of renal function were conducted concurrently.

Main Results:

  • Urea levels showed a significant correlation with both AI@75 (rho = 0.362, p = 0.006) and PWV (rho = 0.487, p = 0.006).
  • Adjusted analyses revealed associations between urea, uric acid, creatinine, and estimated glomerular filtration rate (eGFR) with AI@75.
  • Specifically, higher urea, uric acid, and creatinine, and lower eGFR were linked to increased AI@75.

Conclusions:

  • Urea and uric acid levels are associated with increased arterial stiffness (measured by PWV and AI@75) in women with SLE or APS.
  • These findings suggest a connection between renal function markers and arterial stiffness in women with SLE or APS, even with normal or mildly impaired kidney function.
Abstract

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