Unlabelled: The pathogenesis of primary focal segmental glomerulosclerosis (FSGS) and minimal change disease (MCD) remains unknown to date. Some circulating permeability factors are being discussed. This work assessed molecule candidates for permeability in serum samples of patients with nephrotic syndrome (NS).

Materials And Methods: 41 patients with chronic glomerulonephritis (CGN) were included in our study. 17 patients had FSGS, 7 patients had MCD, 5 patients had membranoproliferative glomerulonephritis (MPGN), 6 patients had IgA nephropathy, and 6 patients had membranous nephropathy (MN). The laboratory data were compared with the clinical and histological features of nephritis. Serum levels of plasminogen activator urokinase receptor (uPAR) and cardiotrophin-like cytokine factor 1 (CLCF-1)were measured by ELISA.

Results: The serum levels of uPAR were higher in FSGS patients before treatment than in patients with other morphological forms (MCD, IgA nephropathy, MN, and MPGN). The levels of uPAR in serum did not correlate with daily proteinuria, serum creatinine/eGFR, arterial hypertension, the number of sclerosed glomeruli, or tubulointerstitial fibrosis. No correlations were found between the levels of CLCF-1 in serum and creatinine levels/glomerular filtration rate, the percentage of sclerosed glomeruli, or the severity of tubulointerstitial fibrosis. There were no significant differences between the histological variants of nephritis. However, we found correlations between CLCF-1 levels and proteinuria and lipid levels.

Conclusion: The data indicate an increase in the serum uPAR levels of FSGS before treatment. CLCF-1 levels in serum do not depend on histological forms of CGN, kidney function, or immunosuppressive treatment, but they correlate with proteinuria and serum lipids in patients with NS.

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http://dx.doi.org/10.5414/CN110514DOI Listing

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