Soluble vascular cell adhesion molecule-1 indicates SLE disease activity and specific organ involvement

Area of Science:

• Immunology
• Rheumatology
• Vascular Biology

Background:

• Systemic lupus erythematosus (SLE) involves immune complex deposition and vascular inflammation.
• Activated endothelial cells are a primary source of VCAM-1, a marker elevated in SLE.
• Elevated soluble VCAM-1 (sVCAM-1) levels in SLE correlate with disease activity and organ damage, particularly renal involvement.

Purpose of the Study:

• To evaluate the association between serum sVCAM-1 levels and anti-dsDNA antibodies.
• To determine the correlation of these markers with SLE disease activity.

Main Methods:

• Sixty-nine SLE patients were included.
• Plasma sVCAM-1 and anti-dsDNA antibody levels were measured using ELISA.
• Disease activity was assessed using the SLE Disease Activity Index (SLEDAI) score.

Main Results:

• Active SLE patients exhibited significantly higher sVCAM-1 levels compared to inactive patients (1009 ± 54 vs. 446 ± 33).
• sVCAM-1 levels strongly correlated with overall SLEDAI scores (r = 0.67, p < 0.0001).
• Statistically significant differences in sVCAM-1 levels were observed in patients with active renal, hematological, and vascular involvement.

Conclusions:

• Clinical manifestations of SLE vary in sVCAM-1 concentrations, especially in active renal, hematological, and vascular disease.
• While anti-dsDNA antibodies showed a weaker correlation with overall activity, they were only significantly elevated in the active renal group.
• sVCAM-1 may serve as a valuable biomarker for monitoring both systemic and organ-specific activity in SLE.