PMID- 19282308 OWN - NLM STAT- MEDLINE DCOM- 20100219 LR - 20151119 IS - 1468-2060 (Electronic) IS - 0003-4967 (Linking) VI - 69 IP - 2 DP - 2010 Feb TI - Women with rheumatoid arthritis negative for anti-cyclic citrullinated peptide and rheumatoid factor are more likely to improve during pregnancy, whereas in autoantibody-positive women autoantibody levels are not influenced by pregnancy. PG - 420-3 LID - 10.1136/ard.2008.104331 [doi] AB - OBJECTIVES: To determine whether changes in levels of anti-cyclic citrullinated peptide (anti-CCP) and rheumatoid factor (RF) are associated with the spontaneous improvement of rheumatoid arthritis (RA) during pregnancy and with the subsequent flare post partum. METHODS: Disease activity scores from the Pregnancy-induced Amelioration of Rheumatoid Arthritis (PARA) study of 118 patients were available for analysis. Before conception (if applicable), at each trimester and at 6, 12 and 26 weeks post partum, levels of the autoantibodies anti-CCP, IgM-RF, IgG-RF and IgA-RF were determined. Responses in disease activity were classified according to European League Against Rheumatism (EULAR) response criteria during pregnancy and post partum, and associated with the presence or absence of autoantibodies. RESULTS: The median levels of anti-CCP and all subclasses of RF during pregnancy were stable, whereas post partum the levels of anti-CCP, IgM-RF and IgA-RF declined. A significantly higher percentage of women without autoantibodies (negative for anti-CCP and RF) improved compared with women positive for either or both autoantibodies (75% vs 39%, p = 0.01). The occurrence of a flare post partum was comparable between these groups. CONCLUSIONS: Improvement of disease activity of RA during pregnancy was not associated with changes in levels of autoantibodies during pregnancy, however, improvement may occur more frequently in the absence of anti-CCP and RF. FAU - de Man, Y A AU - de Man YA AD - Department of Rheumatology, Erasmus MC, University Medical Center Rotterdam, The Netherlands. y.a.deman@erasmusmc.nl FAU - Bakker-Jonges, L E AU - Bakker-Jonges LE FAU - Goorbergh, C M Dufour-van den AU - Goorbergh CM FAU - Tillemans, S P R AU - Tillemans SP FAU - Hooijkaas, H AU - Hooijkaas H FAU - Hazes, J M W AU - Hazes JM FAU - Dolhain, R J E M AU - Dolhain RJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090311 PL - England TA - Ann Rheum Dis JT - Annals of the rheumatic diseases JID - 0372355 RN - 0 (Autoantibodies) RN - 0 (Biomarkers) RN - 0 (Peptides, Cyclic) RN - 0 (cyclic citrullinated peptide) RN - 9009-79-4 (Rheumatoid Factor) SB - IM MH - Adult MH - Arthritis, Rheumatoid/*immunology MH - Autoantibodies/*blood MH - Biomarkers/blood MH - Female MH - Humans MH - Peptides, Cyclic/*immunology MH - Pregnancy MH - Pregnancy Complications/*immunology MH - Prognosis MH - Prospective Studies MH - Puerperal Disorders/immunology MH - Rheumatoid Factor/blood MH - Severity of Illness Index EDAT- 2009/03/14 09:00 MHDA- 2010/02/20 06:00 CRDT- 2009/03/14 09:00 PHST- 2009/03/14 09:00 [entrez] PHST- 2009/03/14 09:00 [pubmed] PHST- 2010/02/20 06:00 [medline] AID - ard.2008.104331 [pii] AID - 10.1136/ard.2008.104331 [doi] PST - ppublish SO - Ann Rheum Dis. 2010 Feb;69(2):420-3. doi: 10.1136/ard.2008.104331. Epub 2009 Mar 11.