Tacrolimus Improves the Proteinuria Remission in Patients with Refractory IgA Nephropathy
American Journal of Nephrology,  Clinical Article

Zhang Q et al. – Tacrolimus showed a rapid proteinuria remission in refractory IgA nephropathy patients. The possible mechanism of tacrolimus to proteinuria remission might be podocyte cytoskeleton stabilization through inhibition of calcineurin expression.

Methods
  • 14 refractory IgAN patients were enrolled.
  • The patients received tacrolimus (0.05–0.1 mg/kg/day) and prednisone (0.5 mg/kg/day) for at least 6 months.
  • Synaptopodin and calcineurin expression were detected in renal tissues of patients who received re-biopsy.
  • A puromycin aminonucleoside (PAN)-induced human podocyte injury model was applied to investigate the possible role of tacrolimus in proteinuria remission.

Results
  • Of the 14 patients enrolled, 3 were withdrawn because serum creatinine increased over 30% baseline.
  • In 11 patients treated with tacrolimus over 6 months, 9 showed complete or partial remission and 7 achieved remission within 1 month.
  • In renal tissues, the expression of calcineurin increased while synaptopodin decreased and recovered partially after tacrolimus therapy.
  • In an in vitro study, F-actin disrupted in human podocytes after stimulation of PAN, while calcineurin increased and synaptopodin decreased.
  • After co-treatment with tacrolimus the reorganization of F-actin and the expression of calcineurin and synaptopodin recovered.

Please login or register to follow this author.
► Click here to access PubMed, Publisher and related articles...
<< Previous Article | Next Article >>

Your Unread Messages in Nephrology

See All >> Messages include industry-sponsored communications and special communications from MDLinx

Most Popular Nephrology Articles

Indexed Journals in Nephrology: Kidney International, Hemodialysis International, Nephrology Dialysis Transplantationmore