Synovial Fluid Bank From Arthritic Patients

Официальное название

Establishment of a Bank of Synovial Fluids and Paired Sera From Arthritic Patients for the Evaluation of New Methods Facilitating the Diagnosis and the Monitoring of Progression and Therapy of Arthritis.

Обзор

The objectives of this group project is to collect synovial fluid (SF) and paired sera and carry out preclinical studies to evaluate, alone or by combination testings, the potential of novel biomarkers for their prevalence and diagnostic/prognostic values in patients with arthritis, and to determine how therapeutic intervention regulate their levels.

Подробное описание

Our group has developed interdisciplinary expertise in biomarkers related to distinct aspects of inflammation-induced joint damage, most notably those associated with degradation of components of the extracellular matrix, bone loss, or associated with post-translational changes on protease inhibitors.

The objectives of this group project is to collect SF and paired sera and carry out preclinical studies to evaluate, alone or by combination testings, the potential of novel biomarkers for their prevalence and diagnostic/prognostic values in patients with arthritis, and to determine how therapeutic intervention regulate their levels.

More specifically, we will study (1) biomarkers associated with osteoclastic bone resorption and synthesis/degradation of cartilage, (2) inhibitors of enzymes (calpastatin) that are preferentially targeted by rheumatoid patients, as well as (3) enzymes (e.g. Matrix Metalloproteinases (MMPs)) responsible for the cleavage of components of the articular cartilage.

Finally, we propose to characterize the repertoire of specific active proteases in the SF of arthritic patients concomitantly to the use biomarkers (neoepitopes of cleaved collagens) previously associated with cartilage destruction and synthesis to identify new targets for the development of protease inhibitors for the treatment of arthritis. Furthermore, our project will also provide the opportunity to test the potential of measuring the net proteolytic activity by Fluorescent-Activated Substrate Conversion as a method of monitoring disease activity and treatment efficiency in a clinical setting.

Первичные конечные точки

• Availability of paired synovial fluid and serum samples for exploratory studies [Срок оценки: Use with various collaborators at different times, upon request and approbation]

Критерии участия

Критерии включения

• Significant joint effusion

Критерии исключения

• Hemorrhagic effusion
• Traumatic effusion
• Less than 3 ml total of collected fluid (used for routine analysis and culture)
• Inability or refusal to consent

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения

Когортное

Центры проведения

Канада · 1 центр

• Centre hospitalier universitaire de Sherbrooke — Sherbrooke

Публикации

• Kilani RT, Maksymowych WP, Aitken A, Boire G, St-Pierre Y, Li Y, Ghahary A. Detection of high levels of 2 specific isoforms of 14-3-3 proteins in synovial fluid from patients with joint inflammation. J Rheumatol. 2007 Aug;34(8):1650-7. Epub 2007 Jul 1. PMID 17611984
• Simard N, Boire G, de Brum-Fernandes AJ, St-Pierre Y. A novel approach to measure the contribution of matrix metalloproteinase in the overall net proteolytic activity present in synovial fluids of patients with arthritis. Arthritis Res Ther. 2006;8(4):R125. doi: 10.1186/ar2014. PMID 16859524

Идентификаторы

NCT: NCT00512343 · 02-12 LS

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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