PMID- 17610317 OWN - NLM STAT- MEDLINE DCOM- 20071127 LR - 20151119 IS - 0315-162X (Print) IS - 0315-162X (Linking) VI - 34 IP - 8 DP - 2007 Aug TI - Changes of clinical response and bone biochemical markers in patients with ankylosing spondylitis taking etanercept. PG - 1753-9 AB - OBJECTIVE: Tumor necrosis factor-alpha has a prominent role in the inflammatory process and bone resorption in patients with ankylosing spondylitis (AS). We evaluated the markers of clinical efficacy and bone biochemical changes in Korean patients with AS treated with etanercept therapy. METHODS: Serum samples from 26 patients receiving etanercept for refractory AS were obtained at baseline and 12 weeks after treatment. Clinical measures and serum levels of transforming growth factor-Beta (TGF-Beta), matrix metalloproteinase-3 (MMP-3), macrophage-colony stimulating factor (M-CSF), bone-specific alkaline phosphatase (BALP), osteocalcin, C-telopeptide (CTX), receptor activator of nuclear factor-kB ligand (RANKL), and osteoprotegerin (OPG) were measured at each timepoint. RESULTS: Significant improvement of the Bath AS Disease Activity Index (BASDAI) and Functional Index (BASFI) was achieved after 12 weeks (p < 0.001). ASsessments in Ankylosing Spondylitis Working Group (ASAS) 20 criteria were achieved by 22 patients (84.6%) after 12 weeks' treatment. ASAS 50 and 70 were achieved by 10 (38.5%) and 7 patients (26.9%). Serum levels of BALP and osteocalcin were significantly increased after 12 weeks of treatment (p < 0.05). Serum levels of CTX were not changed after treatment. Serum levels of TGF-Beta, MMP-3, and M-CSF were significantly decreased after 12 weeks of treatment (p < 0.05). Serum levels of OPG and RANKL were not changed. Change of MMP-3 had a high correlation coefficient with changes of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) upon etanercept treatment (CRP, r = 0.446, p = 0.022; ESR, r = 0.449, p = 0.021). CONCLUSION: In patients with AS, etanercept therapy may be effective for reducing disease activity and improving bone biochemical markers. MMP-3 may be a useful biomarker for monitoring etanercept therapy. FAU - Woo, Jin-Hyun AU - Woo JH AD - Division of Rheumatology, the Hospital for Rheumatic Diseases, The Institute of Rheumatism, Hanyang University, Seol, Korea. FAU - Lee, Hyun-Joo AU - Lee HJ FAU - Sung, Il-Hoon AU - Sung IH FAU - Kim, Tae-Hwan AU - Kim TH LA - eng PT - Clinical Trial PT - Journal Article DEP - 20070615 PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Antirheumatic Agents) RN - 0 (Biomarkers) RN - 0 (Collagen Type I) RN - 0 (Immunoglobulin G) RN - 0 (Osteoprotegerin) RN - 0 (Peptides) RN - 0 (RANK Ligand) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (TNFSF11 protein, human) RN - 0 (Transforming Growth Factor beta) RN - 0 (collagen type I trimeric cross-linked peptide) RN - 104982-03-8 (Osteocalcin) RN - 81627-83-0 (Macrophage Colony-Stimulating Factor) RN - EC 3.1.3.1 (Alkaline Phosphatase) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - OP401G7OJC (Etanercept) SB - IM CIN - J Rheumatol. 2007 Aug;34(8):1647-9. PMID: 17696283 MH - Adult MH - Alkaline Phosphatase/blood MH - Antirheumatic Agents/*therapeutic use MH - Biomarkers/blood MH - Collagen Type I/blood MH - Dose-Response Relationship, Drug MH - Etanercept MH - Female MH - Humans MH - Immunoglobulin G/*therapeutic use MH - Korea MH - Macrophage Colony-Stimulating Factor/blood MH - Male MH - Matrix Metalloproteinase 3/*blood MH - Middle Aged MH - Osteocalcin/*blood MH - Osteoprotegerin/blood MH - Peptides/blood MH - RANK Ligand/blood MH - Receptors, Tumor Necrosis Factor/*therapeutic use MH - Severity of Illness Index MH - Spondylitis, Ankylosing/blood/*drug therapy/*physiopathology MH - Transforming Growth Factor beta/blood EDAT- 2007/07/05 09:00 MHDA- 2007/12/06 09:00 CRDT- 2007/07/05 09:00 PHST- 2007/07/05 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2007/07/05 09:00 [entrez] AID - 07/13/0616 [pii] PST - ppublish SO - J Rheumatol. 2007 Aug;34(8):1753-9. Epub 2007 Jun 15.