Abstract
Autoimmunity is suggested to play a pathogenetic role in premature atherosclerosis. Since atherosclerosis and vasculitis seem pathogenetically related, we hypothesized that ANCA, an important antibody in vasculitis, plays a role in atherosclerosis as well. We therefore investigated the prevalence of ANCA in patients with premature atherosclerosis and related the presence of these antibodies to levels of AECA and markers of inflammation. Methods & Results: In a cohort of 286 patients with premature atherosclerosis the prevalence of ANCA was 5.6% (16/286). All had perinuclear ANCA. More females were ANCA-positive (8M/8F vs. 200M/70F, p=0.03). In a nested case-control study, comparing the 16 ANCA-positive patients with 32 controls, levels of AECA were higher in the first (7.32±0.91U vs. 5.52±0.41U, p<0.05). Conclusion: ANCA does not seem to play a major role in premature atherosclerosis. Whether elevated levels of AECA in ANCA-positive patients with premature atherosclerosis reflect more extended vascular disease remains to be determined.
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