title: The effects of mammalian target of rapamycin inhibitors on serum uric acid levels in renal transplant patients.
abstract: OBJECTIVE
  Elevated uric acid (UA) levels are frequently observed after renal transplantation. We investigated the consequences of shifting from calcineurin inhibitors (CNI) to mammalian target of rapamycin inhibitors (mTORi) on UA levels and graft functions.
  
  
  METHODS
  Ninety-six patients were enrolled. Main points of interest were changes in UA and glomerular filtration rate (GFR).
  
  
  RESULTS
  Mean age of the whole population was 39 ± 11 years (18-73), and 64.2 % were male. Patients were stratified into two groups according to their CNI type prior to the switch as cyclosporin A (CsA) or tacrolimus (Tac). Patients that were switched from CsA had a mean GFR of 49 ± 18 ml/min and serum UA level of 7.4 ± 1.8 mg/dl at the pre-switch period. Mean GFR increased to 53 ± 22 ml/min (p = 0.03), and UA levels decreased to 6.2 ± 1.6 mg/dl at the final visit (p < 0.001). In the Tac group, pre-switch mean GFR was 59 ± 28 ml/min and serum UA level 6.6 ± 2.6 mg/dl. In this group, mean GFR increased to 63 ± 28 ml/min (p = 0.03) and UA levels decreased to 6.2 ± 2.1 at the last visit (p < 0.001).
  
  
  CONCLUSIONS
  Switch from CNI to mTORi-based regimen provides better control of UA levels and improves renal functions.
authors: Division of Nephrology, Ege University, School of Medicine, 35100 Bornova, Izmir, Turkey. ozkangungor@yahoo.com.tr
authors: Ozkan
authors: O
authors: Gungor
authors: Mehmet
authors: M
authors: Tanrisev
authors: Fatih
authors: F
authors: Kircelli
authors: Mehmet Nuri
authors: MN
authors: Turan
authors: Cem
authors: C
authors: Tugmen
authors: Erhan
authors: E
authors: Tatar
authors: Huseyin
authors: H
authors: Toz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use*; D016030:Kidney Transplantation; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D058570:TOR Serine-Threonine Kinases / Q000037:antagonists & inhibitors*; D014527:Uric Acid / Q000097:blood*; D055815:Young Adult
chemical_list: D007166:Immunosuppressive Agents; D014527:Uric Acid; D058570:TOR Serine-Threonine Kinases