title: Urinary proteome analysis at 5-year followup of patients with nonoperated ureteropelvic junction obstruction suggests ongoing kidney remodeling.
abstract: OBJECTIVE
  Severe ureteropelvic junction obstruction is treated surgically. However, for milder cases most clinical teams adopt a watchful waiting approach and only operate in the presence of significant decline of renal function combined with severe hydronephrosis. Little is known about the long-term consequences of ureteropelvic junction obstruction.
  
  
  METHODS
  Using capillary electrophoresis coupled with mass spectrometry, we analyzed the urinary proteome of 42 patients with ureteropelvic junction obstruction 5 years postoperatively or 5 years following spontaneous resolution.
  
  
  RESULTS
  At 5-year followup urinary proteomes were similar between patients with early surgical correction of ureteropelvic junction obstruction and age matched controls. In contrast, urinary proteomes differed significantly between conservatively followed patients and controls. Analyses of the proteomic differences suggested ongoing renal or ureteral remodeling in the conservatively followed patients that was not visible clinically.
  
  
  CONCLUSIONS
  Long-term followup studies are warranted in patients with ureteropelvic junction obstruction, especially those followed conservatively, to determine whether the observed changes in the urinary proteomes become clinically relevant at a later stage.
authors.affiliation: Institut of Cardiovascular and Metabolic Disease, INSERM U1048, Toulouse, France.
authors.forename: Flavio
authors.initials: F
authors.lastname: Bandin
authors.forename: Justyna
authors.initials: J
authors.lastname: Siwy
authors.forename: Benjamin
authors.initials: B
authors.lastname: Breuil
authors.forename: Harald
authors.initials: H
authors.lastname: Mischak
authors.forename: Jean-Loup
authors.initials: JL
authors.lastname: Bascands
authors.forename: Stéphane
authors.initials: S
authors.lastname: Decramer
authors.forename: Joost P
authors.initials: JP
authors.lastname: Schanstra
mesh_terms: D015415:Biomarkers / Q000032:analysis; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D019075:Electrophoresis, Capillary; D005260:Female; D006801:Humans; D007668:Kidney / Q000503:physiopathology*; D007677:Kidney Function Tests; D008297:Male; D013058:Mass Spectrometry; D020543:Proteome / Q000032:analysis*; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D014517:Ureteral Obstruction / Q000503:physiopathology* / Q000601:surgery; D057832:Watchful Waiting
chemical_list: D015415:Biomarkers; D020543:Proteome