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  • Title: Serum levels of angiogenic cytokines in systemic lupus erythematosus and their correlation with disease activity.
    Author: Robak E, Woźniacka A, Sysa-Jedrzejowska A, Stepień H, Robak T.
    Journal: Eur Cytokine Netw; 2001; 12(3):445-52. PubMed ID: 11566625.
    Abstract:
    We investigated the serum concentration of hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF) and transforming growth factor beta1 (TGF-beta1) using an enzyme-linked immunosorbent assay (ELISA) in a group of 60 patients with systemic lupus erythematosus (SLE), and 20 healthy controls. We also examined the possible association between the serum concentrations of these factors and certain clinical, laboratory parameters and SLE activity. HGF, VEGF and TGF-beta1 were detectable in all patients with SLE, and in all normal individuals. bFGF was measurable in 70% of the patients with SLE and in 65% of the healthy controls. The HGF level was higher in active SLE (median 1,019.5pg/ml) than in inactive SLE (median 787.8 pg/ml) (p < 0.005) or in the control group (median 847.0 pg/ml) (p < 0.009). The level of VEGF in active SLE was also higher (203.5 pg/ml) than in inactive disease (116.1 pg/ml) (p < 0.05) or in healthy persons (133.5 pg/ml) (p < 0.04). The levels of bFGF and TGF-beta1 were similar for both the active and inactive SLE, and the control group (p > 0.05). We found a significant, positive correlation between the levels of HGF and bFGF (r = 0.268, p < 0.04), HGF and TGF-beta1 (r = 0.365, p < 0.005) and HGF and VEGF (r = 0.327, p < 0.02) as well as VEGF and TGF-beta1 (r = 0.543, p < 0.001). We found a positive correlation between VEGF serum levels and platelet counts (r = 0.272, p < 0.04), and the TGF-beta1 concentration and platelet count (r = 0.313; p < 0.02). There was also a positive correlation between HGF serum concentration and the SLE activity score (r = 0.435, p < 0.001), as well as between the level of VEGF and SLE activity (r = 0.252, p = 0.05). In conclusion, serum levels of the angiogenic factors HGF and VEGF may be relevant in SLE pathogenesis. Their concentrations seem to be markers of SLE activity.
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