Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with multiple organ involvement. 1 Since the strategies of treatment with glucocorticoids (GC) and immunosuppressive agents have been established, mortality risk has decreased in patients with SLE. 2 Infection and cardiovascular events are regarded as the most common causes of death in SLE. Cardiovascular diseases (CVD) are 5-10 times more common in patients with SLE than in the general population. 3-6 CVD in SLE occurs earlier than the general population and is affected by traditional risk factors such as obesity, diabetes, smoking and hypertension. 7,8 Disease Abstract Aim: Patients with systemic lupus erythematosus (SLE) have an increased risk of cardiovascular disease owing to an immunological abnormality, along with traditional risk factors. We found that carotid artery intima-media thickness (cIMT) and plaque were associated with age, body mass index (BMI) and disease activity in a previous study 4 years ago. Our aim was to identify risk factors associated with progression of subclinical atherosclerosis in SLE.
Methods:We assessed cIMT and plaque using Doppler ultrasonography in 61 Korean women with SLE who were enrolled in the previous study 4 years ago.
Results:The mean cIMT of the patients was 0.39 ± 0.09 mm; 11 patients had carotid plaques, which was similar to the results of the previous study. Twenty-one patients had increased cIMT, and new carotid plaque had developed in seven patients. Patients with increased cIMT had a lower BMI and took fewer non-steroidal anti-inflammatory drugs and higher 4 year cumulative glucocorticoid dose than patients without increased cIMT. The 4 year cumulative glucocorticoid dose was higher in patients with carotid plaque than in those without. On multivariate regression analysis, BMI (odds ratio [OR] = 0.67, P = 0.034) was associated with increased cIMT, and the 4 year cumulative glucocorticoid dose was associated with increased cIMT (OR = 6.994, P = 0.025) and carotid plaque (OR = 5.651, P = 0.031).
Conclusion:This prospective follow-up study on cIMT and plaque in patients with SLE showed that low BMI and 4 year cumulative glucocorticoid dose were associated with the progression of subclinical atherosclerosis. K E Y W O R D S atherosclerosis, body mass index, carotid artery, disease activity, glucocorticoid, systemic lupus erythematosus | 1411 JUNG et al. activity, duration, specific manifestations or organ damage have been shown to increase the possibility of developing CVD. Dysfunctional immune and inflammatory response including the complement depletion, role of interferon, inflammatory cytokines and impaired endothelial function were revealed to contribute to the premature atherosclerosis development in patients with SLE. 9-12An assessment of the risk for CVD can be established using various methods, including carotid artery Doppler ultrasound, coronary artery calcium score and pulse wave velocity. Several studies assessing the risk of CVD in SLE have used different methods. 13,14 Carotid artery int...