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2016 ; 7
(4
): ä Nephropedia Template TP
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ACPAs Are Much More Than Diagnostic Autoantibodies
#MMPMID27824549
Watad A
; Amital H
Rambam Maimonides Med J
2016[Oct]; 7
(4
): ä PMID27824549
show ga
Anti-citrullinated protein autoantibodies (ACPAs) are the major autoantibodies in
rheumatoid arthritis (RA). Anti-citrullinated protein autoantibodies are directed
against different citrullinated antigens, including filaggrin, fibrinogen,
vimentin, and collagen. Presence of ACPA is associated with joint damage and
extra-articular manifestations, suggesting that ACPAs are most likely pathogenic
autoantibodies in RA. In vitro, ACPAs induce macrophage tumor necrosis factor
alpha (TNF-?) production, osteoclastogenesis, and complement activation. These
autoantibodies also induce the formation of neutrophil extracellular traps
(NETs). Additionally, ACPAs induce pathogenic cytokines expression and oxidative
stress in immune cells derived from RA patients. The aim of this review is to
show the pathogenic roles of these autoantibodies in RA.