Abstract
Systemic Lupus Erythematosus (SLE) is a systemic autoimmune disease with a broad spectrum of clinical presentations and incompletely understood pathogenesis. This autoimmune disease is characterized by alterations in both the innate and adaptive immune system that lead to the loss of immunologic tolerance.In autoimmune diseases particularly in SLE, early diagnosis, flare or remission phases can be difficult to identify.Proteomics can help to find new therapeutic targets and it also could help to better understand the cellular mechanisms. The aim of this study was to observe the variations in plasma and Peripheral Blood Mononuclear Cells (PBMCs) proteome in order to increase our knowledge about pathogenesis and to find possible diagnostic markers and/or therapeutic targets for improving diagnosis and treatment.The comparative proteomic analyses showed that several proteins were differentially expressed in the PBMCs from SLE patients. Among these, PRDX2 may be used as candidate biomarker or target protein for further investigations. In plasma, we showed that plasma clusterin levels increased in SLE patients compared to healthy controls, but this increase is not statistically significant. These proteomic results provide suggestions for understanding the molecular mechanisms of SLE, as well as the physiological changes correlated with SLE disease.
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