PMID- 22131127 OWN - NLM STAT- MEDLINE DCOM- 20120817 LR - 20211021 IS - 1528-1132 (Electronic) IS - 0009-921X (Print) IS - 0009-921X (Linking) VI - 470 IP - 7 DP - 2012 Jul TI - Is monocyte chemotactic protein 1 elevated in aseptic loosening of TKA? A pilot study. PG - 1879-84 LID - 10.1007/s11999-011-2191-5 [doi] AB - BACKGROUND: Failure of TKA from aseptic loosening is a growing concern, as TKA is performed with increasing frequency. Loosening is multifactorial and may be associated with elevated inflammatory cytokines in addition to biomechanical failure. QUESTIONS/PURPOSES: We asked whether proinflammatory cytokines and chemokines are elevated in synovial fluid from patients undergoing revision surgery as compared to those with osteoarthritis (OA) or rheumatoid arthritis (RA). METHODS: We obtained synovial fluid samples from 20 patients: six with aseptic loosening of TKA (all with bone loss), 10 with primary OA, and four with RA. A panel of cytokines/chemokines was screened using a SearchLight((R)) Array (Pierce Biotechnology, Rockford, IL, USA) in one revision sample. Using these data, we assayed the synovial fluids for monocyte chemotactic protein 1 (MCP-1) by ELISA. RESULTS: We observed an increase in synovial MCP-1 levels in samples from patients planned for TKA revision compared to those with OA or RA. In patients undergoing revision arthroplasty, the mean (+/- SD) MCP-1 concentration was 21,233 +/- 18,966 pg/mL (range, 1550-50,657 pg/mL; n = 6). In patients with OA, the mean MCP-1 level was 3012 +/- 3321 pg/mL. In patients with RA, the mean MCP-1 concentration was 690 +/- 561 pg/mL. CONCLUSIONS: All patients undergoing revision TKA showed elevated concentrations of MCP-1 compared to patients with OA and RA, suggesting MCP-1 may serve as a potential marker or predictor of bone loss in patients undergoing revision surgery. CLINICAL RELEVANCE: MCP-1 may be a novel biomarker in patients showing early symptoms of aseptic loosening of TKA. FAU - Dasa, Vinod AU - Dasa V AD - Department of Orthopaedics, Louisiana State University Health Sciences Center, 1542 Tulane Avenue, New Orleans, LA 70115, USA. vdasa@lsuhsc.edu FAU - Kramer, Jill M AU - Kramer JM FAU - Gaffen, Sarah L AU - Gaffen SL FAU - Kirkwood, Keith L AU - Kirkwood KL FAU - Mihalko, William M AU - Mihalko WM LA - eng GR - R01 DE018290/DE/NIDCR NIH HHS/United States GR - R01 AR054389/AR/NIAMS NIH HHS/United States GR - R03 DE014460/DE/NIDCR NIH HHS/United States GR - P20 RR017696/RR/NCRR NIH HHS/United States GR - F30 DE014831/DE/NIDCR NIH HHS/United States PT - Journal Article PL - United States TA - Clin Orthop Relat Res JT - Clinical orthopaedics and related research JID - 0075674 RN - 0 (Biomarkers) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Inflammation Mediators) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Arthritis, Rheumatoid/immunology/*surgery MH - Arthroplasty, Replacement, Knee/adverse effects/*instrumentation MH - Biomarkers/analysis MH - Chemokine CCL2/*analysis MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Inflammation Mediators/*analysis MH - Male MH - Middle Aged MH - New York MH - Osteoarthritis, Knee/immunology/*surgery MH - Pilot Projects MH - *Prosthesis Failure MH - Reoperation MH - Synovial Fluid/*immunology MH - Treatment Failure MH - Up-Regulation PMC - PMC3369079 EDAT- 2011/12/02 06:00 MHDA- 2012/08/18 06:00 PMCR- 2013/07/01 CRDT- 2011/12/02 06:00 PHST- 2011/12/02 06:00 [entrez] PHST- 2011/12/02 06:00 [pubmed] PHST- 2012/08/18 06:00 [medline] PHST- 2013/07/01 00:00 [pmc-release] AID - 2191 [pii] AID - 10.1007/s11999-011-2191-5 [doi] PST - ppublish SO - Clin Orthop Relat Res. 2012 Jul;470(7):1879-84. doi: 10.1007/s11999-011-2191-5.