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Serum level of osteopontin as an inflammatory marker does not indicate disease activity or responsiveness to therapeutic treatments in patients with rheumatoid arthritis

 Hye-In Ji  ;  Sang-Hoon Lee  ;  Ran Song  ;  Hyung-In Yang  ;  Yeon-Ah Lee  ;  Seung-Jae Hong  ;  Somi Kim  ;  Yong-Beom Park  ;  Soo-Kon Lee  ;  Myung Chul Yoo  ;  Kyoung Soo Kim 
 CLINICAL RHEUMATOLOGY, Vol.33(3) : 397-402, 2014 
Journal Title
Issue Date
Adult ; Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/blood* ; Arthritis, Rheumatoid/drug therapy ; Biomarkers/blood ; Female ; Humans ; Inflammation/blood ; Male ; Middle Aged ; Osteopontin/blood* ; Severity of Illness Index
Disease-modifying antirheumatic drugs (DMARDs) ; Osteopontin (OPN) ; Rheumatoid arthritis (RA) ; TNF blocker
Osteopontin (OPN) is known to be significantly involved in the pathogenesis of rheumatoid arthritis (RA). This study aimed to evaluate if the serum concentration of OPN in patients with RA before and after therapeutic treatments was correlated to disease activity and response to therapy. Blood samples from 40 patients with RA were collected at baseline and six months after starting treatment with disease-modifying antirheumatic drugs (DMARDs) and/or tumor necrosis factor (TNF)-α blockers. Serum levels of OPN were measured by ELISA. At baseline, the serum OPN level in RA patients was significantly higher than that of the healthy group. The OPN level at baseline in RA patients with severe disease activity as evaluated by DAS28 was slightly higher than that of those with moderate disease activity. The serum OPN level in RA patients was not significantly correlated with the DAS28 level. The serum OPN level in both responders and non-responders after therapy was significantly decreased regardless of responsiveness to therapy. Also, the OPN level at baseline did not affect the responsiveness to therapeutic treatments. In conclusion, serum OPN level was not correlated with disease activity or responsiveness of RA patients to therapeutic treatments.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Park, Yong Beom(박용범)
Lee, Soo Kon(이수곤)
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