Enrichment of malondialdehyde-acetaldehyde antibody in the rheumatoid arthritis joint.
Journal Article (Journal Article)
ObjectiveTo characterize the expression of malondialdehdye-acetaldehyde (MAA) adducts and anti-MAA antibody in articular tissues and serum of patients with RA.
MethodsPaired sera and SF were examined from 29 RA and 13 OA patients. Anti-MAA antibody, RF, ACPA and total immunoglobulin were quantified. SF-serum measures were compared within and between disease groups. The presence and co-localization of MAA, citrulline and select leukocyte antigens in RA and OA synovial tissues were examined using immunohistochemistry.
ResultsCirculating and SF anti-MAA antibody concentrations were higher in RA vs OA by 1.5- to 5-fold. IgG (P < 0.001), IgM (P = 0.006) and IgA (P = 0.036) anti-MAA antibodies were higher in paired RA SF than serum, differences not observed for total immunoglobulin, RF or ACPA. In RA synovial tissues, co-localization of MAA with citrulline and CD19+ or CD27+ B cells was demonstrated and was much higher in magnitude than MAA or citrulline co-localization with T cells, monocytes, macrophages or dendritic cells (P < 0.01).
ConclusionAnti-MAA antibodies are present in higher concentrations in the RA joint compared with sera, a finding not observed for other disease-related autoantibodies. Co-localization of MAA and citrulline with mature B cells, coupled with the local enrichment of anti-MAA immune responses, implicates MAA-adduct formation in local autoantibody production.
- Mikuls, TR; Duryee, MJ; Rahman, R; Anderson, DR; Sayles, HR; Hollins, A; Michaud, K; Wolfe, F; Thiele, GE; Sokolove, J; Robinson, WH; Lingampalli, N; Nicholas, AP; Talmon, GA; Su, K; Zimmerman, MC; Klassen, LW; Thiele, GM
- October 2017
Volume / Issue
- 56 / 10
Start / End Page
- 1794 - 1803
Pubmed Central ID
Electronic International Standard Serial Number (EISSN)
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)