To screen and validate differential proteins as novel biomarkers in active Takayasu’s arteritis (TAK).

Plasma samples from 40 active, 40 inactive patients, and 40 healthy controls were collected. Protein profiles of plasma were mapped by two-dimensional gel electrophoresis. Differential protein spots were detected and identified by image analysis and mass spectrometry. Plasma concentrations of proteins were measured to validate candidate biomarkers. The area under the receiver operating characteristic (ROC) curve (AUC) of circulating plasma concentrations of candidate biomarkers were calculated to assess diagnostic value.

With a total of 1507 matched gel spots, there were 170 differential expression spots between active and inactive TAK, including 139 up-regulated and 31 downregulated. Only 11 proteins could be identified by mass spectrometry. Serum amyloid A(SAA), fibrinogen, complement C4a, complement C3c, complement C4b binding protein(C4bp), recombination acting gene protein 1(RAG1), alpha-1-acid glycoprotein, alpha-1-microglobulin, complement C7, complement factor H related protein-1 were up-regulated in active patients, while serum amyloid P was down-regulated. Active patients had higher circulating levels of RAG1(P<0.001), C4bp (p=0.012) and SAA (p<0.001), compared to inactive patients, while inactive patients had higher levels than controls (RAG1, p=0.011; C4bp, p=0.012; SAA, p=0.005). CP 43 The composite AUC with SAA, RAG1, and C4bp was 0.94 (95%CI 0.86-0.98) for discriminating activity, larger than 0.71(95% CI 0.60-0.80) for ESR (p=0.0004) or 0.75(95%CI 0.64-0.84) for CRP (p=0.0014), respectively.

Some acute-phase and immunology-related proteins may serve as novel biomarkers of TAK. Further study of these proteins may be helpful to elucidate the pathologic mechanism.

Some acute-phase and immunology-related proteins may serve as novel biomarkers of TAK. Further study of these proteins may be helpful to elucidate the pathologic mechanism.

Cardiopulmonary exercise test (CPET) is a widely used examination to predict the prognosis of many chronic pulmonary diseases, and it has also been tested in systemic sclerosis (SSc) with a focus on the development of pulmonary hypertension. CPET is a highly informative non-invasive tool that provides a more complex information than conventional lung function tests to predict the course of cardiopulmonary diseases, as it provides a general overview of the aerobic metabolism, influenced by pulmonary, cardiovascular and peripheral muscle function. The purpose of this investigation was to assess if the progression and the development of poor overall disease outcome in SSc can be predicted by this method.

Twenty-nine SSc patients were investigated prospectively with standard follow-up plus CPET for a mean of 3.7 years to match the results of conventional evaluation modalities and CPET. A composite end-point of several serious outcomes reflecting SSc-related vascular and cardiopulmonary damage was set up, and T parameters obtained at the beginning of follow-up are informative of the appearance of various adverse end-points. CPET is a feasible examination in the care of SSc patients and provides excess information to current standard follow-up examinations.

The exact function of interleukin-7 (IL-7) in autoimmune diseases remains unclear although it is a recognised therapeutic target for cytokine blockade. Our objective was to investigate the regulation and downstream effect of IL-7 in diseased tissue from rheumatoid arthritis (RA) patients notably with respect to its function as bone turnover regulator and tissue architecture (TA) organiser.

Synovial tissues (fresh, frozen or xed) were obtained from our tissue bank and distributed between experiments for live cell cultures, histology, immunohistochemistry or gene expression array by qPCR.

IL-7 expression in synoviocyte cultures was up-regulated by pro-in ammatory cytokines, notably IL-6. Gene expression pro ling segregated synovial biopsies based on the presence of B/plasma cells and ectopic TA. IL-7 gene expression was associated with that of several genes whose function was to support B-cell maturation in tissue with distinct B-cell aggregates (despite the lack of IL-7-Receptor expression on B-cells) as well as with ectopic germinal-like centres. IL-7 was associated with bone turnover regulation in biopsies with diffuse in ltration. A novel relationship between the IL-7 and IL-6 axis was also highlighted in human tissue.

Overall, IL-7 may contribute to the maintenance of the pro-in ammatory cycle perpetuating in ammation in RA synovium. We therefore propose a novel role for IL-7 as an orchestrator of TA with an impact on B-cell maturation in relation with IL-6.

Overall, IL-7 may contribute to the maintenance of the pro-in ammatory cycle perpetuating in ammation in RA synovium. We therefore propose a novel role for IL-7 as an orchestrator of TA with an impact on B-cell maturation in relation with IL-6.Juvenile idiopathic arthritis (JIA) is the most common chronic joint disease in paediatric rheumatology. Over the last two decades, ultrasound (US) has emerged as a tool with the potential to enhance disease assessment and management of JIA. This imaging modality is safe and well tolerated by children and can be easily applied bedside in the clinical setting. Owing to the lack of published studies regarding the validity and reproducibility of US in JIA and the difficulties in interpreting images of children, US was initially perceived like an art rather than a science. In recent years, a great deal of efforts has been made in order to fill the gap of scientific knowledge on US between paediatric and adult rheumatology. This has yielded significant breakthroughs, such as the achievement of valuable information about the anatomical peculiarities of the growing skeleton on US, including internationally agreed definitions on B-mode and Doppler US of components for the normal joints, and the development of a standardised scanning protocol for US examination suitable for use in children. The precise role of US in JIA, however, is yet to be fully defined. Although further research regarding the use of US in joint inflammatory pathology in paediatrics is required, this imaging modality may well possess the necessary properties to pursue the best practice in the care of children with JIA in the near future. The present review provides information on the recent advances that have made the application of US increasingly promising for the management of JIA.