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CC BY-NC-ND 4.0 · J Lab Physicians 2010; 2(02): 093-099
DOI: 10.4103/0974-2727.72158
Original Article

Detection of Viral Citrullinated Peptide Antibodies Directed Against EBV or VCP: In Early Rheumatoid Arthritis Patients of Indian Origin

Sudha S Deo
Sir. H.N. Medical Research Society, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
Sir. H.N. Hospital and Research Centre, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
,
Rashmi R Shetty
Sir. H.N. Medical Research Society, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
Sir. H.N. Hospital and Research Centre, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
,
Kejal J Mistry
Sir. H.N. Medical Research Society, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
Sir. H.N. Hospital and Research Centre, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
,
Arun R Chogle
Sir. H.N. Hospital and Research Centre, Raja Ram Mohan Roy Road, Girgaum, Mumbai – 400 004, India
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Source of Support: Mentioned in acknowledgement.,
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ABSTRACT

Aim: Study was undertaken to analyze the frequency of anti-viral citrullinated peptide (anti-VCP) antibodies in sera from patients with early rheumatoid arthritis (ERA).

Materials and Methods: Viral citrullinated peptide (VCP) and Epstein-Barr nuclear antigen (EBNA-1) peptide were commercially prepared and antibodies to these were determined in 25 patients of ERA, 40 disease control patients constituting 25 rheumatoid arthritis (RA), 7 systemic lupus erythematosus (SLE), 2 scleroderma, 1 spondyloarthritis (SpA), 1 juvenile rheumatoid arthritis (JRA), 1 osteoarthritis (OA), 1 psoriatic arthritis (PsA), 1 undifferentiated arthritis (UA), and 1 gout and 25 healthy controls (HCs) were taken for comparison. In-house ELISA was established for both the antibodies while cyclic citrullinated peptide (CCP) antibody was detected by commercial ELISA kit.

Results: Significant increase in VCP antibody by ERA and disease controls than healthy normal was observed. VCP IgM antibody was significantly increased in RA patients than HC. The presence of VCP antibody signifies a good marker for ERA. We observed significant difference in the VCP IgG and IgM antibody when compared to EBNA-1. In-house ELISA established for EBNA-1 and VCP antibodies showed low sensitivity but 96% specificity.

Conclusions: We observed that sera from early RA patients reacted to the deiminated protein encoded by Epstain Barr Virus (EBV). Thus a possible role of virus in inducing an anti-citrullinated peptide antibody (ACPA) response reveals viral etiology in this disease.

Keywords

Anti-viral citrullinated peptides/antibodies - ERA - EBNA-1 - ELISA


Publication History

Article published online:
29 January 2020

© 2010.

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