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2013 ; 72
(6
): 901-7
Nephropedia Template TP
gab.com Text
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English Wikipedia
Multiple cytokines and chemokines are associated with rheumatoid
arthritis-related autoimmunity in first-degree relatives without rheumatoid
arthritis: Studies of the Aetiology of Rheumatoid Arthritis (SERA)
#MMPMID22915618
Hughes-Austin JM
; Deane KD
; Derber LA
; Kolfenbach JR
; Zerbe GO
; Sokolove J
; Lahey LJ
; Weisman MH
; Buckner JH
; Mikuls TR
; O'Dell JR
; Keating RM
; Gregersen PK
; Robinson WH
; Holers VM
; Norris JM
Ann Rheum Dis
2013[Jun]; 72
(6
): 901-7
PMID22915618
show ga
OBJECTIVE: We investigated whether rheumatoid arthritis (RA)-related
autoantibodies were associated with systemic inflammation in a prospective cohort
of first-degree relatives (FDRs) of RA probands, a population without RA but at
increased risk for its future development. METHODS: We studied 44 autoantibody
positive FDRs, of whom 29 were rheumatoid factor (RF) positive, 25 were positive
for the high risk autoantibody profile (HRP), that is, positive for anti-cyclic
citrullinated peptide and/or for at least two RF IgM, IgG or IgA isotypes, and
nine FDRs who were positive for both; and 62 FDRs who were never autoantibody
positive. Twenty-five cytokines/chemokines were measured using a bead-based assay
in serum. As a comprehensive measure of inflammation, we calculated a Cytokine
Score by summing all cytokine/chemokine levels, weighted by their regression
coefficients for RA-autoantibody association. We compared C-reactive protein,
individual cytokines/chemokines and Cytokine Score to the outcomes: positivity
for RF and for the HRP using logistic regression. RESULTS: Adjusting for age,
sex, ethnicity and ever smoking, the Cytokine Score and levels of IL-6 and IL-9
were associated with both RF and HRP. IL-2, granulocyte macrophage-colony
stimulating factor (GM-CSF), and interferon (IFN)-? were associated with HRP
only. Associations between the Cytokine Score and RF and HRP positivity were
replicated in an independent military personnel cohort. CONCLUSIONS: In
first-degree relatives of patients with RA, RA-related autoimmunity is associated
with inflammation, as evidenced by associations with multiple cytokines and
chemokines.