Role of serum cartilage oligomeric matrix protein in diagnosis of rheumatoid arthritis

LV Chaochang; FENG Shaojie; ZHANG Xude; LIU Fengxia

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Medical Journal of the Chinese People Armed Police Forces ›› 2018, Vol. 29 ›› Issue (4) : 378-380.

ORIGINAL ARTICLES

Role of serum cartilage oligomeric matrix protein in diagnosis of rheumatoid arthritis

LV Chaochang¹,FENG Shaojie¹,ZHANG Xude²,LIU Fengxia²

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Abstract

Objective To analyze the role of serum cartilage oligomeric matrix protein (COMP) levels in differential diagnosis of rheumatoid arthritis (RA).Methods Eighty-two patients with RA and another thirty-four healthy control subjects were enrolled and divided into RA patients and healthy controls.According to clinical manifestations and results of laboratory examination, the patients were divided into active patients and patients in remission.According to the radiological changes,these patients were again divided into patients with joint bony damages and those without joint bony damage.The diagnostic ability of COMP for RA was evaluated by comparing it with anti-cyclic citrullinated peptide (anti-CCP) antibody levels.Receiver operating characteristic(ROC) curves were plotted before the areas under the ROC curves(AUC),while sensitivity and specificity were calculated.Results The serum COMP level was significantly higher in patients with RA than in control subjects(P<0.05), in active patients than in those in remission(P<0.05),and in patients with joint bony damages than in those without joint bony damage(P<0.05).When COMP and anti-CCP were used to distinguish between RA patients and healthy controls at the optimal cut-off value of 21.51 ng/ml and 34.76 RU/ml respectively, COMP’s AUC was (0.864), sensitivity (0.817) and specificity was (0.882), higher than those of anti CCP’s AUC (0.764), sensitivity (0.610) and specificity (0.824).Conclusions The serum COMP level can be used as a biological marker for cartilage destruction and for differentiating between patients with RA and healthy individuals.

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cartilage oligomeric matrix protein / rheumatoid arthritis / anti-cyclic citrullinated peptide antibody

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LV Chaochang,FENG Shaojie,ZHANG Xude,LIU Fengxia. Role of serum cartilage oligomeric matrix protein in diagnosis of rheumatoid arthritis[J]. Medical Journal of the Chinese People Armed Police Forces. 2018, 29(4): 378-380

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