Soluble biological markers in osteoarthritis

Author:

Rousseau Jean-Charles123ORCID,Chapurlat Roland2456,Garnero Patrick24

Affiliation:

1. INSERM Unit 1033, Pavillon F, Hôpital E. Herriot, 5 Place d’Arsonval, 69437 Lyon Cedex 03, France

2. Biochemical Marker Assay Laboratory for Clinical Research (PMO-Lab), Lyon, France

3. INSERM 1033, Lyon, France

4. INSERM UMR 1033, Lyon, France

5. Université de Lyon, Lyon, France

6. Hôpital Edouard Herriot, Hospice Civils de Lyon, Lyon, France

Abstract

In recent years, markers research has focused on the structural components of cartilage matrix. Specifically, a second generation of degradation markers has been developed against type II collagen neoepitopes generated by specific enzymes. A particular effort has been made to measure the degradation of minor collagens III and X of the cartilage matrix. However, because clinical data, including longitudinal controlled studies, are very scarce, it remains unclear whether they will be useful as an alternative to or in combination with current more established collagen biological markers to assess patients with osteoarthritis (OA). In addition, new approaches using high-throughput technologies allowed to detect new types of markers and improve the knowledge about the metabolic changes linked to OA. The relative advances coming from phenotype research are a first attempt to classify the heterogeneity of OA, and several markers could improve the phenotype characterization. These phenotypes could improve the selection of patients in clinical trials limiting the size of the studies by selecting patients with OA characteristics corresponding to the metabolic pathway targeted by the molecules evaluated. In addition, the inclusion of rapid progressors only in clinical trials would facilitate the demonstration of efficacy of the investigative drug to reduce joint degradation. The combination of selective biochemical markers appears as a promising and cost-effective approach to fulfill this unmet clinical need. Among the various potential roles of biomarkers in OA, their ability to monitor drug efficacy is probably one of the most important, in association with clinical and imaging parameters. Biochemical markers have the unique property to detect changes in joint tissue metabolism within a few weeks.

Publisher

SAGE Publications

Subject

Orthopedics and Sports Medicine,Rheumatology

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