Major vault protein/lung resistance related protein: A novel biomarker for rheumatoid arthritis
Ημερομηνία
2021Γλώσσα
en
Λέξη-κλειδί
Επιτομή
Objective Rheumatoid arthritis (RA) can lead to joint destruction and early institution of effective treatment can preserve joint function. Biomarkers can establish early diagnosis and predict effect of treatment. Vault particles, large cytoplasmic ribonucleoprotein particles that participate in inflammation, might serve as biomarkers. The aim of this study was to assess the diagnostic and the prognostic value of major vault protein (MVP) and their antibodies in RA. Methods Serum samples from 159 RA patients, 26 early RA (ERA) patients, 21 patients with osteoarthritis (OA) and 30 healthy individuals were tested for MVP, anti-cyclic citrullinated peptide (anti-CCP) and C-reactive protein (CRP) using enzyme-linked immunosorbent assays (ELISA). Rheumatoid factor (RF) was tested by nephelometry, and anti-MVP antibodies were detected by anti-MVP peptide ELISA using an in-house protocol. Results MVP levels were higher in RA and ERA, compared to OA and healthy controls (p<0.00001). A combination of MVP with RF or anti-CCP showed an improved diagnostic accuracy compared to RF or anti-CCP alone in RA and ERA. MVP exhibited similar AUC levels to anti-CCP and RF in RA whereas in ERA, MVP exhibited the same or slightly higher AUC levels, compared to anti-CCP and RF, respectively. High MVP levels were associated with lack of response to treatment. Levels of anti-MVP peptide 2 antibodies were significantly higher in RA compared to healthy controls (t= 2.73, p=0.007). Conclusion MVP and autoantibodies against MVP may have the potential to serve as diagnostic and prognostic biomarkers in RA. © 2021 Clinical and Experimental Rheumatology S.A.S.. All rights reserved.
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