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Updated: Sep 16, 2025

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
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.
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.
Background:
Patients diagnosed with systemic lupus erythematosus (SLE) or antiphospholipid syndrome (APS) carry a higher risk of atherosclerosis and subsequent major adverse cardiac events; however, the mechanisms of such complications are still not fully understood. Although patients with SLE or APS are also known to have an increased risk of renal function impairment, there are few data on the correlation of augmentation index normalized to 75 beats per minute (AI@75) or pulse wave velocity (PWV) reflecting arterial remodeling, with laboratory tests indicative of renal function in women diagnosed with SLE or APS.
Methods:
This was a prospective, cross-sectional study that enrolled women with a diagnosis of SLE and/or APS. All patients underwent measurement of carotid-femoral PWV (SphygmoCor XCEL, AtCor Medical Ltd) with pulse wave analysis, calculation of AI@75, and laboratory assessment.
Results:
A total of 60 women with SLE or APS were enrolled in the study. Urea level was found to correlate with AI@75 (rho = 0.362, p = 0.006) and PWV (rho = 0.487, p = 0.006). In separate adjusted (age, body mass index, and blood pressure) models, urea (B = 0.722, 95% CI: 0.407-1.037, p < 0.001), uric acid (4.932, 95% CI: 0.447-9.418, p = 0.03), creatinine (B for 0.1 mg/dL increase = 3.367, 95% CI: 1.112-5.601, p = 0.004), and eGFR (B = -0.318, 95%CI: -0.580- -0.055, p = 0.02) were associated with AI@75.
Conclusions:
Urea and uric acid values are associated with increased arterial stiffness measured by non-invasive methods such as PWV and AI@75 in women with SLE or APS with normal or slightly reduced glomerular function.
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