title: Do renal failure and hemodialysis have any effect on the elimination of free and total prostate-specific antigen?
abstract: OBJECTIVE
  The aim of this study was first to determine the serum levels of free prostate-specific antigen (f-PSA), total prostate-specific antigen (t-PSA) and f-PSA/t-PSA ratios in patients with renal failure, and secondary, to investigate whether a significant difference between serum f-PSA and t-PSA levels consists in patients with end-stage renal disease before and after hemodialysis.
  
  
  METHODS
  Serum concentrations of f-PSA and t-PSA were measured in 36 men with end-stage renal disease before and after hemodialysis and in 95 healthy controls. A chemiluminescent enzyme assay was used to determine the levels of f-PSA and t-PSA.
  
  
  RESULTS
  The mean concentrations of serum t-PSA were 1.36+/-0.43 ng/ml in patients on hemodialysis and 1.08+/-0.60 ng/ml in controls. There was no significant difference in f-PSA and t-PSA levels between patients with renal failure and controls. F-PSA and t-PSA levels in patients with renal failure also showed no statistical differences before and after hemodialysis.
  
  
  CONCLUSIONS
  The limited kidney reserve in patients with end-stage renal disease is sufficient to maintain the levels of t-PSA and f-PSA within normal ranges and hemodialysis does not alter the serum levels of different PSA forms.
authors.affiliation: Department of Urology, Akdeniz University, School of Medicine, Antalya, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Danişman
authors.forename: S
authors.initials: S
authors.lastname: Kiliç
authors.forename: E
authors.initials: E
authors.lastname: Kukul
authors.forename: G
authors.initials: G
authors.lastname: Yakupoğlu
authors.forename: E
authors.initials: E
authors.lastname: Güntekin
authors.forename: M
authors.initials: M
authors.lastname: Baykara
authors.forename: M
authors.initials: M
authors.lastname: Sevük
mesh_terms: D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D017430:Prostate-Specific Antigen / Q000097:blood*; D006435:Renal Dialysis
chemical_list: D017430:Prostate-Specific Antigen