scholarly journals Soluble urokinase-type plasminogen activator receptor as a biomarker for focal segmental glomerulosclerosis; a retrospective analysis

2018 ◽  
Vol 7 (3) ◽  
pp. 182-187 ◽  
Author(s):  
Miguel Verdelho ◽  
Ana Carina Ferreira ◽  
Maria Céu Santos ◽  
Mário Góis ◽  
Helena Viana ◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Plasminogen Activator ◽  
Focal Segmental Glomerulosclerosis ◽  
Segmental Glomerulosclerosis ◽  
Type Plasminogen Activator ◽  
Urokinase Type Plasminogen Activator ◽  
Plasminogen Activator Receptor

scholarly journals Diagnostic and Prognostic Value of Soluble Urokinase-type Plasminogen Activator Receptor (suPAR) in Focal Segmental Glomerulosclerosis and Impact of Detection Method

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Wolfgang Winnicki ◽  
Gere Sunder-Plassmann ◽  
Gürkan Sengölge ◽  
Ammon Handisurya ◽  
Harald Herkner ◽  
...  
Keyword(s):  
Plasminogen Activator ◽  
Focal Segmental Glomerulosclerosis ◽  
Sensitivity And Specificity ◽  
High Sensitivity ◽  
Test Methods ◽  
Segmental Glomerulosclerosis ◽  
Type Plasminogen Activator ◽  
Urokinase Type Plasminogen Activator ◽  
Plasminogen Activator Receptor ◽  
Stage Renal Disease

Abstract The plasma soluble urokinase-type plasminogen activator receptor (suPAR) is a biomarker for focal segmental glomerulosclerosis (FSGS), but its value is under discussion because of ambiguous results arising from different ELISA methods in previous studies. The aim of this study was to compare diagnostic performance of two leading suPAR ELISA kits and examine four objectives in 146 subjects: (1) plasma suPAR levels according to glomerular disease (primary, secondary and recurrent FSGS after kidney transplantation, other glomerulonephritis) and in healthy controls; (2) suPAR levels based on glomerular filtration rate; (3) sensitivity and specificity of suPAR for FSGS diagnosis and determination of optimal cut-offs; (4) suPAR as prognostic tool. Patients with FSGS showed significant higher suPAR values than patients with other glomerulonephritis and healthy individuals. This applied to subjects with and without chronic kidney disease. Although both suPARnostic™ assay and Quantikine Human uPAR ELISA Kit exerted high sensitivity and specificity for FSGS diagnosis, their cut-off values of 4.644 ng/mL and 2.789 ng/mL were significantly different. Higher suPAR was furthermore predictive for progression to end-stage renal disease. In summary, suPAR values must be interpreted in the context of population and test methods used. Knowing test specific cut-offs makes suPAR a valuable biomarker for FSGS.

scholarly journals Fetal Renal Echogenicity Associated with Maternal Focal Segmental Glomerulosclerosis: The Effect of Transplacental Transmission of Permeability Factor suPAR

2018 ◽  
Vol 7 (10) ◽  
pp. 324 ◽  
Author(s):  
Shirley Shuster ◽  
Ghada Ankawi ◽  
Christoph Licht ◽  
Jochen Reiser ◽  
Xuexiang Wang ◽  
...  
Keyword(s):  
Focal Segmental Glomerulosclerosis ◽  
Transplacental Transmission ◽  
Transplacental Passage ◽  
Segmental Glomerulosclerosis ◽  
Type Plasminogen Activator ◽  
Urokinase Type Plasminogen Activator ◽  
Plasminogen Activator Receptor ◽  
Maternal Fetal Transmission ◽  
Fetal Response ◽  
Echogenic Kidneys

We report a case of a pregnant woman with nephrotic syndrome due to biopsy-proven focal segmental glomerulosclerosis (FSGS) whose fetus developed echogenic kidneys and severe oligohydramnios by 27 weeks of gestation. Maternal treatment with prednisone resulted in normalization of the amniotic fluid indices and resolution of fetal renal echogenicity. The newborn was noted to have transient renal dysfunction and proteinuria, resolving by 6 weeks postpartum. The transplacental passage of permeability factors is postulated to have caused both the fetal and newborn renal presentation, with significantly elevated levels of soluble urokinase-type plasminogen activator receptor (suPAR) noted in the cord blood. This case documents the transplacental maternal-fetal transmission of suPAR, demonstrating the potential for maternal-fetal transmission of deleterious, disease-causing entities, and adds to the differential diagnosis of fetal echogenic kidneys. Further, this is the first documentation of a fetal response to maternal systemic therapy.

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