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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Arthritis+Res+Ther
2017 ; 19
(1
): 85
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gab.com Text
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English Wikipedia
Circulating DNA in rheumatoid arthritis: pathological changes and association
with clinically used serological markers
#MMPMID28464939
Rykova E
; Sizikov A
; Roggenbuck D
; Antonenko O
; Bryzgalov L
; Morozkin E
; Skvortsova K
; Vlassov V
; Laktionov P
; Kozlov V
Arthritis Res Ther
2017[May]; 19
(1
): 85
PMID28464939
show ga
BACKGROUND: Early diagnosis of rheumatoid arthritis (RA) is crucial to providing
effective therapy and often hampered by unspecific clinical manifestations.
Elevated levels of extracellular circulating DNA (cirDNA) in patients with
autoimmune disease were found to be associated with etiopathogenesis. To our
knowledge, this is the first study to investigate the putative diagnostic use of
cirDNA in RA and its association with disease activity. METHODS: Blood samples
were taken from 63 healthy subjects (HS) and 74 patients with RA. cirDNA was
extracted from plasma and cell surface-bound cirDNA fractions (csbDNA). cirDNA
concentration was measured by quantitative real-time polymerase chain reaction.
Rheumatoid factor was analyzed by immunonephelometry, whereas C-reactive protein
and anticitrullinated protein/peptide antibodies (ACPA) were detected by
enzyme-linked immunosorbent assay. RESULTS: Plasma cirDNA was significantly
elevated in patients with RA compared with HS (12.0 versus 8.4 ng/ml, p?0.01).
In contrast, nuclear csbDNA (n-csbDNA) was significantly decreased (24.0 versus
50.8 ng/ml, p?0.01), whereas mitochondrial csbDNA (m-csbDNA) was elevated
(1.44?×?10(6) copies/ml versus 0.58?×?10(6) copies/ml, p?0.05) in RA. The
combination of csbDNA (mitochondrial?+?nuclear) with ACPA reveals the best
positive/negative likelihood ratios (LRs) for the discrimination RA from HS (LR+
61.00, LR- 0.03) in contrast to ACPA (LR+ 9.00, LR- 0.19) or csbDNA (LR+ 8.00,
LR- 0.18) alone. CONCLUSIONS: Nuclear and mitochondrial cirDNA levels in plasma
and on the surface of blood cells are modulated in RA. Combination of cirDNA
values with ACPA can improve the serological diagnosis of RA.