The relationship between serum YKL-40 levels and arterial stiffness in patients with ankylosing spondylitis.
Acta reumatologica portuguesa(2017)
Abstract
The mean age of AS patients was 34.6 ± 10.2 years and of controls was 36.3 ± 9.0 years. CF-PWV was significantly higher in AS patients than in controls (8.2±2.7 vs.7.0±1.6 m/s, respectively; P=0.015). However, the IMT-C was not significantly different between AS patients and controls (0.6±0.3 vs. 0.5±0.2 mm, P=0.501). YKL-40 levels were significantly higher in AS patients than in controls (78.9±37.9 vs. 58.4±21.2 ng/mL, P=0.003) and were strongly correlated with CF-PWV (r=0.773, P < 0.001) and IMT-C (r=0.548, P < 0.001). A multiple linear regression analysis revealed that CF-PWV could be explained by serum YKL-40 levels and IMT-C (adjusted R²= 0.707, P=0.013 and P=0.001, respectively). AS patients with a higher disease activity score had higher YKL-40 levels, IMT-C, and CF-PWV than did those with a lower disease activity score (P < 0.001, P=0.008, and P < 0.001, respectively) Conclusion: AS patients had higher serum YKL-40 levels, CF-PWV, and IMT-C than did healthy controls. Additionally, there was an association between increased CF-PWV and serum YKL-40 levels. Therefore, we conclude that CF-PWV and YKL-40 levels may be used for early diagnosis of atherosclerosis in AS patients.
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Key words
Ankylosing spondylitis,Arterial stiffness,Carotid-femoral pulse wave velocity,YKL-40 levels
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