Carotid subclinical atherosclerosis is associated with disease activity but not vitamin D in Korean systemic lupus erythematosus.

Abstract

Atherosclerosis develops early in systemic lupus erythematosus (SLE) patients and

is an important cause of mortality. Vitamin D deficiency is found to be

associated with cardiovascular disease and autoimmunity. We evaluated the extent

of carotid subclinical atherosclerosis and analyzed its correlation with vitamin

D in SLE. One hundred and two female patients with SLE and 52 normal controls

(NCs) were recruited. The mean carotid intima-media thickness (IMT) of SLE

patients was 0.41 +/- 0.08 mm, which was higher than that of NCs (0.32 +/- 0.08

mm, p = 0.012). In addition, carotid plaques were more frequent and the plaque

index was higher in SLE patients than in NCs (0.68 +/- 1.39 vs. 0.26 +/- 0.87, p

= 0.026). Carotid IMT was correlated with age, body mass index, SLE disease

activity index, and aspirin use in SLE patients. The plaque index was correlated

with renal involvement. Vitamin 25(OH)D3 level was not correlated with carotid

IMT, plaque index or disease activity markers. In SLE, the risk of cardiovascular

disease is higher than that in NCs, which may be derived from systemic

inflammation. It may be not suitable to assess vitamin D as a marker of disease

activity or subclinical atherosclerosis in SLE patients.