PMID- 16740681 OWN - NLM STAT- MEDLINE DCOM- 20070130 LR - 20181113 IS - 0003-4967 (Print) IS - 1468-2060 (Electronic) IS - 0003-4967 (Linking) VI - 66 IP - 1 DP - 2007 Jan TI - Up regulation of monocyte chemoattractant protein-1 expression in anti-citrulline antibody and immunoglobulin M rheumatoid factor positive subjects precedes onset of inflammatory response and development of overt rheumatoid arthritis. PG - 121-3 AB - OBJECTIVE: To analyse the inflammatory mediators, including monocyte chemoattractant protein-1 (MCP-1), in blood samples donated years before onset of rheumatoid arthritis. Previously, it has been shown in these individuals that antibodies against cyclic citrullinated peptide (anti-CCP) detectable years before the onset of symptoms have a high predictive value for development of rheumatoid arthritis. METHODS: A nested case-control study was performed: patients with rheumatoid arthritis were identified from among blood donors antedating onset by a median of three years (pre-patients, n = 92); four matched controls were selected randomly for each pre-patient. Plasma were analysed for secretory phospholipase A2 (sPLA2) and MCP-1 using ELISA, for high-sensitivity C reactive protein (hsCRP) using the chemiluminescence method and for interleukin-6 using a sensitive bioassay. RESULTS: When the results were stratified for the presence of anti-CCP antibodies and immunoglobulin M-rheumatoid factor (IgM-RF), only MCP-1 levels were found to be significantly raised in patients with anti-CCP and IgM-RF compared with controls. CONCLUSION: Levels of MCP-1 were significantly increased in the plasma of patients having anti-CCP antibodies or IgM-RF and who later developed rheumatoid arthritis. These findings indicate up regulation of chemotactic activity for leucocytes before the development of rheumatoid arthritis. FAU - Rantapaa-Dahlqvist, S AU - Rantapaa-Dahlqvist S AD - Department of Rheumatology, University Hospital, SE-901 85 Umea, Sweden. Solbritt.Rantapaa.Dahlqvist@medicin.umu.se FAU - Boman, K AU - Boman K FAU - Tarkowski, A AU - Tarkowski A FAU - Hallmans, G AU - Hallmans G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060601 PL - England TA - Ann Rheum Dis JT - Annals of the rheumatic diseases JID - 0372355 RN - 0 (Autoantibodies) RN - 0 (Biomarkers) RN - 0 (Chemokine CCL2) RN - 0 (Immunoglobulin M) RN - 29VT07BGDA (Citrulline) RN - 9007-41-4 (C-Reactive Protein) RN - 9009-79-4 (Rheumatoid Factor) SB - IM MH - Adult MH - Aged MH - Arthritis, Rheumatoid/*blood MH - Autoantibodies/*blood MH - Biomarkers/blood MH - Blood Donors MH - C-Reactive Protein/analysis MH - Case-Control Studies MH - Chemokine CCL2/*blood MH - Chi-Square Distribution MH - Citrulline/*immunology MH - Disease Progression MH - Female MH - Humans MH - Immunoglobulin M/blood MH - Male MH - Middle Aged MH - Rheumatoid Factor/blood MH - Severity of Illness Index MH - Time Factors MH - *Up-Regulation PMC - PMC1798414 COIS- Competing interests: None declared. EDAT- 2006/06/03 09:00 MHDA- 2007/01/31 09:00 PMCR- 2010/01/01 CRDT- 2006/06/03 09:00 PHST- 2006/06/03 09:00 [pubmed] PHST- 2007/01/31 09:00 [medline] PHST- 2006/06/03 09:00 [entrez] PHST- 2010/01/01 00:00 [pmc-release] AID - ard.2006.057331 [pii] AID - ar57331 [pii] AID - 10.1136/ard.2006.057331 [doi] PST - ppublish SO - Ann Rheum Dis. 2007 Jan;66(1):121-3. doi: 10.1136/ard.2006.057331. Epub 2006 Jun 1.