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Original Articles

Autoantibodies against complement C1q in patients with Behcet’s disease: association with vascular involvement

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Pages 316-320 | Received 01 Feb 2013, Accepted 27 Mar 2013, Published online: 05 Mar 2014
 

Abstract

Aim. The aim of our study was to determine the prevalence of anti-C1q antibodies and their possible association with clinical presentation in Behcet’s disease (BD) patients with special emphasis for patients with vascular involvement.

Methods. Plasma anti-C1q Abs levels were measured using an enzyme-linked immunosorbent assay in 51 BD patients and 25 age- and gender-matched healthy controls.

Results. We found elevated concentrations of anti-C1q more frequently in patients with BD (18 %) than in healthy controls (8 %). The highest prevalence was found in patients with vascular BD (42 %) which was significantly higher than patients without vascular BD and healthy controls (p = 0.025). Furthermore, patients with vascular BD had the highest mean anti-C1q levels when compared to BD patients without vascular involvement or healthy control subjects (p = 0.015). We did not find significant differences in the prevalence of any other organ involvement between BD patients with elevated vs. normal anti-C1q ab levels. Anti-C1q ab levels positively correlated with ESR (r = 0.383, p = 0.006) and negatively with C4 (r = −0.304, p = 0.030).

Conclusion. In conclusion, we found an increased prevalence of anti-C1q autoantibodies in BD patients with vascular involvement. Further large scale longitudinal studies are required to assess and clarify the significance and the pathogenic role of anti-C1q antibodies in BD and other autoimmune diseases in which vasculitis is a component.

Conflict of interest

None.

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