Abstract
The synovial proteome was investigated to isolate joint-specific biomarkers that are significantly expressed in Juvenile idiopathic arthritis (JIA) patients displaying recurrent inflammation. These proteins could act as novel therapeutic targets. JIA comprises a poorly understood group of chronic autoimmune diseases with variable clinical presentations and outcomes.Serial synovial fluid and matched plasma samples (n=6 patients) were subjected to protein separation by 2-dimension electrophoreisis (2DE). Focused gels were fixed, stained with colloidal Coomassie, scanned and protein spot intensities quantified by Phoretics software analysis. Pooled subgroup profiles (n=12 patients) were used to highlight joint specific protein spots with expression patterns that correlated with recurrence of joint inflammation. Protein spots were picked, digested by trypsin and extracted. Peptides (n=3) were identified with a mass spectrometer.2DE reveals ~680 spots per gel within the pH 4-7 range for synovial fluid and plasma. On comparison of plasma and synovial ‘master’ gels, a subpopulation of spots uniquely expressed in synovial fluid, were identified. The expression levels of 12 synovial protein spots correlated positively with clinical and laboratory indices of inflammation. Furthermore they were over represented in those patients with recurrent joint effusions (p
Original language | English |
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Title of host publication | Irish Journal of Medical Science |
Publisher | Springer |
Pages | 1-54 |
Number of pages | 1 |
Volume | 174 |
Edition | 4 |
Publication status | Published (in print/issue) - 2005 |
Event | Irish Society for Rheumatology and Irish Rheumatology Health Professionals Society, Annual General Meeting - Trinity Centre – St. James’s Hospital Dublin 8 Duration: 1 Jan 2005 → … |
Conference
Conference | Irish Society for Rheumatology and Irish Rheumatology Health Professionals Society, Annual General Meeting |
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Period | 1/01/05 → … |
Keywords
- Proteomics
- bioinformatics
- mass spectrometry
- juvenile arthritis