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2018 ; 8
(1
): 3684
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Antibodies to a strain-specific citrullinated Epstein-Barr virus peptide
diagnoses rheumatoid arthritis
#MMPMID29487382
Trier NH
; Holm BE
; Heiden J
; Slot O
; Locht H
; Lindegaard H
; Svendsen A
; Nielsen CT
; Jacobsen S
; Theander E
; Houen G
Sci Rep
2018[Feb]; 8
(1
): 3684
PMID29487382
show ga
Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease.
Anti-citrullinated protein antibodies (ACPA) are crucial for the serological
diagnosis of RA, where Epstein-Barr virus (EBV) has been suggested to be an
environmental agent in triggering the onset of the disease. This study aimed to
analyse antibody reactivity to citrullinated EBV nuclear antigen-2 (EBNA-2)
peptides from three different EBV strains (B95-8, GD1 and AG876) using
streptavidin capture enzyme-linked immunosorbent assay. One peptide, only found
in a single strain (AG876), obtained a sensitivity and specificity of 77% and
95%, respectively and showed high sequence similarity to the filaggrin peptide
originally used for ACPA detection. Comparison of antibody reactivity to
commercial assays found that the citrullinated peptide was as effective in
detecting ACPA as highly sensitive and specific commercial assays. The data
presented demonstrate that the citrullinated EBNA-2 peptide indeed is recognised
specifically by RA sera and that the single peptide is able to compete with
assays containing multiple peptides. Furthermore, it could be hypothesized that
RA may be caused by (a) specific strain(s) of EBV.
|Anti-Citrullinated Protein Antibodies/*immunology
[MESH]