Original Article
Association between disease activity and osteocalcin, β-isomerized C-terminal telopeptides in SAPHO syndrome
Chen Li, Shuo Zhang, Jinhe Liu, Zhenhua Dong, Wen Zhang
Published 2016-05-15
Cite as Chin J Rheumatol, 2016, 20(5): 304-307. DOI: 10.3760/cma.j.issn.1007-7480.2016.05.004
Abstract
ObjectiveTo investigate the relationship between disease activity and osteocalcin, β-isomerized C-terminal telopeptides(β-CTX)in SAPHO syndrome.
MethodsWe studied 58 cases who were diagnosed as SAPHO syndrome. The following indices used to assess the activity of SAPHO were measured: Bath ankylosing spondylitis Disease activity index(BASDAI), Bath ankylosing spondylitis functional index(BASFI), visual analogue scale(VAS)pain and erythrocyte sedimentation rate(ESR), C-reactive protein(CRP), osteocalcin and β-CTX. The SAPHO patients were divided from two groups according to the disease activity. The relationships were analyzed with t-test and Pearson's test.
ResultsThe β-CTX of the active group(0.43 ±0.20)ng/ml was elevated than the stable group(0.23 ±0.09)ng/mL(t=-4.620, P=0.007). And there was no significant difference in the osteocalcin between the active group(2.7 ±1.0)μg/L and the stable group(2.4±1.0)μg/L(t=-1.169, P=0.820). There was no significant correlation between the serum osteocalcin and ESR or hypersensitive CRP(hs-CRP)(rESR=0.228, PESR=0.088; rhsCRP=-0.085, PhsCRP=0.528). And β-CTX level was related to the VAS(r=0.496, P<0.01), BASDAI(r=0.401, P=0.002)and BASFI(r=0.295,P=0.025). While no significant relationship between the osteocalcin and pain index was observed in our study.
ConclusionThe positive correlation between serum β-CTX and disease activity indicates significant bone absorption during the bone destroy process in SAPHO syndrome.
Key words:
Osteocalcin; Synovitis, acne, pustulosis, hyperostosis and osteitis syndrome; β-isomerized C-terminal telopeptides
Contributor Information
Chen Li
Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
Shuo Zhang
Department of Rheumatology, Peking Union Medical College, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
Jinhe Liu
Zhenhua Dong
Wen Zhang