PMID- 17181921 OWN - NLM STAT- MEDLINE DCOM- 20070123 LR - 20220227 IS - 0392-856X (Print) IS - 0392-856X (Linking) VI - 24 IP - 5 DP - 2006 Sep-Oct TI - Regulation of serum chemokines following infliximab therapy in patients with rheumatoid arthritis. PG - 529-33 AB - OBJECTIVE: We studied the effects of the multiple infusions of infliximab, a chimeric anti-tumor necrosis factor alpha (anti-TNF-alpha) antibody, on the serum chemokines levels in patients with active rheumatoid arthritis (RA). METHODS: RA patients were supposed to receive 9 infusions of infliximab (3mg/kg) at weeks 0, 2, 6, and every 8 weeks thereafter with the same dose. All patients continued treatment with methotrexate (MTX) (7.5-20mg/week). Serum concentrations of interleukin-8 (IL-8), RANTES (regulated upon activation, normal T cell expressed and secreted) and monocyte chemoattractant protein-1 (MCP-1) were assessed by ELISA at weeks 0, 2, 6, 14, 38, prior to infusion, and additionally at week 62. RESULTS: Initial infusion of infliximab caused reduction in serum IL-8, RANTES and MCP-1 (in all cases p < 0.001) levels. Subsequent infliximab administrations also significantly decreased serum chemokines levels, but was less effective. Prior to the first infliximab infusion serum concentrations of studied chemokines correlated with markers of RA activity such as the erythrocyte sedimentation rate (ESR) or CRP levels, number of swollen joints and disease activity score (DAS). Following next drug infusions such associations were far less significant. Infliximab treatment induced a significant reduction in the number of monocytes observed through the whole study (in all cases p < 0.05). CONCLUSION: Anti-TNF-alpha antibody therapy accompanied by MTX, beside a rapid clinical improvement, reduced serum chemokines concentrations in RA patients. Subsequent administrations of infliximab sustained chemokines decrease, although to a lesser extent than the first two dose of infliximab. FAU - Klimiuk, P A AU - Klimiuk PA AD - Department of Rheumatology and Internal Diseases, Medical University of Bialystok, Bialystok, Poland. klimp@amb.edu.pl FAU - Sierakowski, S AU - Sierakowski S FAU - Domyslawska, I AU - Domyslawska I FAU - Chwiecko, J AU - Chwiecko J LA - eng PT - Journal Article PL - Italy TA - Clin Exp Rheumatol JT - Clinical and experimental rheumatology JID - 8308521 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antirheumatic Agents) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL5) RN - 0 (Interleukin-8) RN - 9007-41-4 (C-Reactive Protein) RN - B72HH48FLU (Infliximab) SB - IM MH - Adult MH - Aged MH - Antibodies, Monoclonal/pharmacology/*therapeutic use MH - Antirheumatic Agents/pharmacology/*therapeutic use MH - Arthritis, Rheumatoid/blood/*drug therapy/physiopathology MH - Blood Sedimentation MH - C-Reactive Protein/analysis MH - Chemokine CCL2/*blood MH - Chemokine CCL5/*blood MH - Humans MH - Infliximab MH - Interleukin-8/*blood MH - Joints/physiopathology MH - Middle Aged MH - Severity of Illness Index MH - Time Factors EDAT- 2006/12/22 09:00 MHDA- 2007/01/24 09:00 CRDT- 2006/12/22 09:00 PHST- 2006/12/22 09:00 [pubmed] PHST- 2007/01/24 09:00 [medline] PHST- 2006/12/22 09:00 [entrez] AID - 1932 [pii] PST - ppublish SO - Clin Exp Rheumatol. 2006 Sep-Oct;24(5):529-33.