PMID- 21885500 OWN - NLM STAT- MEDLINE DCOM- 20120420 LR - 20151119 IS - 1499-2752 (Electronic) IS - 0315-162X (Linking) VI - 38 IP - 11 DP - 2011 Nov TI - Levels of serum matrix metalloproteinase-3 correlate with disease activity in the enthesitis-related arthritis category of juvenile idiopathic arthritis. PG - 2482-7 LID - 10.3899/jrheum.110352 [doi] AB - OBJECTIVE: Serum matrix metalloproteinase-3 (MMP-3) has been shown to reflect disease activity in ankylosing spondylitis (AS) and rheumatoid arthritis. Elevated levels have been found in juvenile idiopathic arthritis (JIA). In the enthesitis-related arthritis category of JIA (JIA-ERA), we studied whether serum MMP-3 levels and ratios of MMP-3/tissue inhibitor of metalloproteinase (TIMP-1) are correlated with disease activity and whether they are sensitive to change in disease activity. METHODS: A total of 54 patients with JIA-ERA (International League of Associations for Rheumatology criteria) were enrolled for study. Baseline disease activity measures included tender and swollen joint counts, Maastricht AS Enthesitis Score, Bath AS Disease Activity Index (BASDAI), Bath AS Functional Index (BASFI), patient assessment of pain and global disease activity, physician assessment of global disease activity, and erythrocyte sedimentation rate (ESR). Serum MMP-3 and TIMP-1 levels were measured using ELISA. A group of 24 patients were followed up for longitudinal study. RESULTS: The mean age of 54 patients (48 males) at disease onset was 11.8 +/- 4.19 years and duration of disease was 5.2 +/- 4.3 years. Median ESR was 65 mm/h (range 46.5-97) and median BASDAI was 3.4 (range 2.5-4.7). Median MMP-3, TIMP-1, and MMP-3/TIMP-1 ratio were 50.4 ng/ml (IQR 13.0-193.8), 228.9 ng/ml (IQR 108.2-290.4), and 0.3 (IQR 0.07-1.13), respectively. At inclusion MMP-3 levels correlated directly with various disease activity measures: tender joint count (TJC; r = 0.60), swollen joint count (SJC; r = 0.45), BASFI (r = 0.29), BASDAI (r = 0.32), ESR (r = 0.49), physician global assessment (r = 0.40), patient visual analog scale for pain (r = 0.28), and patient global assessment (r = 0.38; all p < 0.05). MMP-3/TIMP-1 ratio correlated only with TJC (r = 0.51), SJC (r = 0.39), and ESR (r = 0.34; p < 0.05). At followup, change in MMP-3 correlated with changes in TJC (r = 0.42) and SJC (r = 0.44; p < 0.05), while change in ESR did not correlate with change in any disease activity measure. CONCLUSION: MMP-3 levels are a good marker for disease activity in JIA-ERA. FAU - Viswanath, Vishad AU - Viswanath V AD - Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India. amita@sgpgi.ac.in FAU - Myles, Arpita AU - Myles A FAU - Dayal, Rajeshwar AU - Dayal R FAU - Aggarwal, Amita AU - Aggarwal A LA - eng PT - Journal Article DEP - 20110901 PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Antirheumatic Agents) RN - 0 (Biomarkers) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Adolescent MH - Anti-Inflammatory Agents, Non-Steroidal/therapeutic use MH - Antirheumatic Agents/therapeutic use MH - Arthritis, Juvenile/*blood/*diagnosis/drug therapy MH - Biomarkers/blood MH - Blood Sedimentation MH - Child MH - Child, Preschool MH - *Disease Progression MH - Female MH - Follow-Up Studies MH - Humans MH - Longitudinal Studies MH - Male MH - Matrix Metalloproteinase 3/*blood MH - Pain Measurement MH - *Severity of Illness Index MH - Tissue Inhibitor of Metalloproteinase-1/blood MH - Young Adult EDAT- 2011/09/03 06:00 MHDA- 2012/04/21 06:00 CRDT- 2011/09/03 06:00 PHST- 2011/09/03 06:00 [entrez] PHST- 2011/09/03 06:00 [pubmed] PHST- 2012/04/21 06:00 [medline] AID - jrheum.110352 [pii] AID - 10.3899/jrheum.110352 [doi] PST - ppublish SO - J Rheumatol. 2011 Nov;38(11):2482-7. doi: 10.3899/jrheum.110352. Epub 2011 Sep 1.