PMID- 29904905 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230926 IS - 2197-1153 (Print) IS - 2197-1153 (Electronic) IS - 2197-1153 (Linking) VI - 5 IP - 1 DP - 2018 Jun 15 TI - MMP-3 in the peripheral serum as a biomarker of knee osteoarthritis, 40 years after open total knee meniscectomy. PG - 21 LID - 10.1186/s40634-018-0132-x [doi] LID - 21 AB - BACKGROUND: To explore potential biomarkers in a meniscectomy-induced knee osteoarthritis model, at forty years after meniscectomy. METHODS: We carried out a forty-year study of 53 patients who, as adolescents, underwent open total meniscectomy and assessed two potential synovial and serum biomarkers, namely glycosaminoglycan (GAG) and matrix metalloproteinase-3 (MMP-3). Of the 30 patients available for review, 8 had contralateral knee operations and were excluded. Of the remaining 22 patients, 17 had successful operated knee synovial fluid aspirations and 8 also had successful contralateral control knee aspirations. GAG and MMP3 levels in the synovial fluid and peripheral serum was measured using Alcian blue precipitation and ELISA quantification, respectively. Patients also had their knee radiographs assessed and their radiographic osteoarthritis classified as per the Kellgren-Lawrence and AhlbÓ“ck systems. RESULTS: At forty years after meniscectomy, synovial MMP-3 levels remain increased (p = 0.0132) while GAG levels were reduced (p = 0.0487) when compared to controls and these two levels correlate inversely. Furthermore, levels of synovial MMP-3 significantly correlated (p = 0.0032, r = 0.7734; p = 0.0256, r = 0.5552) and GAG levels significantly inversely correlated (p = 0.0308, r = - 0.6220; p = 0.0135, r = - 0.6024), respectively, with both radiological scoring systems. Interestingly, we found that the levels of serum MMP-3 correlated only with the synovial fluid levels of MMP-3 in the operated knee and not with the non-operated joint (p = 0.0252, r = 0.7706 vs. p = 0.0764, r = 0.6576). Multiple regression analysis for patient's quality of life based on these biomarkers revealed an almost perfect result with an R2 of 0.9998 and a p value = 0.0087. CONCLUSION: Our results suggest that serum levels of MMP3 could be used as a potential biomarker for knee osteoarthritis, using a simple blood test. Larger cohorts are desirable in order to prove or disprove this finding. FAU - Pengas, Ioannis AU - Pengas I AUID- ORCID: 0000-0001-9602-9104 AD - Consultant Trauma & Orthopaedic Knee Surgeon, Joint Preservation & Soft Tissue Knee Specialist, Royal Cornwall Teaching Hospitals NHS Trust Treliske, Truro, TR1 3LQ, UK. yiannispengas@yahoo.com. FAU - Eldridge, Suzanne AU - Eldridge S AD - Department of Experimental Medicine and Rheumatology, William Harvey Research Institute. Barts and The London, Queen Mary's School of Medicine and Dentistry, London, EC1M 6BQ, UK. FAU - Assiotis, Aggelos AU - Assiotis A AD - Specialist registrar in Trauma & Orthopaedics, Chelsea & Westminster Hospital NHS Foundation Trust, 369 Fulham Rd, Chelsea, London, SW10 9NH, UK. FAU - McNicholas, Michael AU - McNicholas M AD - Consultant Trauma & Orthopaedic Knee Surgeon, Aintree University Hospital NHS Foundation Trust Longmoor Ln, Liverpool, L9 7AL, UK. FAU - Mendes, Joao Espregueira AU - Mendes JE AD - Orthopaedics Department of Minho University, R. da Universidade, Minho University, 4710-057, Braga, Portugal. FAU - Laver, Lior AU - Laver L AD - Department of Arthroscopy, The Royal Orthopaedic Hospital, The Woodlands, Bristol Rd S, Birmingham, B31 2AP, UK. LA - eng PT - Journal Article DEP - 20180615 PL - United States TA - J Exp Orthop JT - Journal of experimental orthopaedics JID - 101653750 PMC - PMC6003895 COIS- COMPETING INTERESTS: No benefits in any form have been received or will be received from a commercial party related directly or indirectly with the subject of this article. The authors also wish to declare no conflict of interest relevant to this study. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2018/06/16 06:00 MHDA- 2018/06/16 06:01 PMCR- 2018/06/15 CRDT- 2018/06/16 06:00 PHST- 2018/03/01 00:00 [received] PHST- 2018/05/17 00:00 [accepted] PHST- 2018/06/16 06:00 [entrez] PHST- 2018/06/16 06:00 [pubmed] PHST- 2018/06/16 06:01 [medline] PHST- 2018/06/15 00:00 [pmc-release] AID - 10.1186/s40634-018-0132-x [pii] AID - 132 [pii] AID - 10.1186/s40634-018-0132-x [doi] PST - epublish SO - J Exp Orthop. 2018 Jun 15;5(1):21. doi: 10.1186/s40634-018-0132-x.