| Background: Endothelial dysfunction plays an important role in pathogenesis of systemic
lupus erythematosus (SLE). Considering the importance of serum soluble vascular cell adhesion
molecule-1 as the most abundant of the circulating adhesion molecules increased as a
result of endothelial dysfunction and the role of endothelin-1 in pathophysiology of SLE, this
study aimed to evaluate serum soluble vascular cell adhesion molecule-1 and endothelin-1
levels in SLE patients compared to healthy subjects. Methods: In this cross-sectional study, 60
SLE patients according to the Systemic Lupus International Collaborating Clinics classification
criteria for SLE and 40 age and sex-matched healthy controls were included. In patients,
clinical examination was performed and SLE disease activity index was assessed. Serum
endothelin-1 and soluble vascular cell adhesion molecule-1 levels were measured using
ELISA kits. Results: The meanstandard deviation age of patients and controls was
31.917.66 and 33.2010.08 years, respectively. Compared to healthy controls, serum soluble
vascular cell adhesion molecule-1 (1023.8352.96 vs. 866.06109.91) and endothelin-1
(77.8316.27 vs. 54.4512.01) was significantly higher in SLE patients (P¼0.003 and
P<0.001, respectively). The most common organs involved in patients were skin, joint and
kidney. There were no significant differences in serum soluble vascular cell adhesion molecule-
1 and endothelin-1 levels according to organ involvement, activity of disease and the conventional
serum markers of disease activity (P>0.05). There was no significant correlation
between disease activity, organ involvement and negative or positivity of autoantibodies as
well as serum complement with endothelin-1 and vascular cell adhesion molecule-1 levels
(P>0.05). Conclusions: Although our study revealed higher serum soluble vascular cell adhesion
molecule-1 and endothelin-1 levels in SLE patients compared to healthy controls, there
were no significant correlations between their serum levels with organ involvement and disease
activity. |