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Better renal function with enhanced immunosuppression and protocol biopsies after kidney transplantation in children

Paula Seikku1, Leena Krogerus, Hannu Jalanko

  • 1Department of Pediatrics, University of Helsinki, Helsinki, Finland. paula.seikku@hus.fi

Pediatric Transplantation
|November 5, 2005
PubMed

Insights

Detecting subclinical rejection and tailoring immunosuppression in pediatric kidney transplant (Tx) patients improved graft function. This approach, especially in younger children, led to higher glomerular filtration rates (GFR) 18 months post-transplant.

Area of Science:

  • Nephrology
  • Pediatric Transplantation
  • Immunosuppression

Background:

  • Subclinical rejection can impair graft function after renal transplantation (Tx).
  • Previous studies indicated a decline in glomerular filtration rate (GFR) in young pediatric renal Tx patients within 18 months.
  • Early detection and tailored treatment of subclinical rejection are crucial for long-term graft survival.

Purpose of the Study:

  • To evaluate the impact of enhanced and individualized immunosuppression, including basiliximab, on graft function in pediatric renal Tx patients.
  • To compare graft function and histological outcomes between a historical control group and a study group receiving enhanced immunosuppression.
  • To assess the effectiveness of detecting and treating subclinical rejection in improving long-term renal graft outcomes.

Main Methods:

  • Retrospective study of 59 pediatric renal Tx patients (1995-2001).
  • 35 historical controls received triple-therapy (azathioprine, methylprednisolone, cyclosporine).
  • 24 study patients received basiliximab plus adjusted triple-therapy, with protocol biopsies and GFR measurements at multiple time points.

Main Results:

  • The study group had fewer acute rejection episodes (0.38 vs. 1.23 per patient) and lower serum creatinine levels.
  • Subclinical rejection was detected and treated in 39% of study patients at 3 months.
  • GFR was significantly higher in the study group at 18 months (87 vs. 68 mL/min/1.73 m(2)), particularly in children ≤2 years old (99 vs. 68 mL/min/1.73 m(2)).
  • Chronic changes were less frequent in the study group (29%) compared to controls (47%) at 18 months.

Conclusions:

  • Enhanced and individualized immunosuppression, combined with early detection of subclinical rejection, significantly improves GFR 18 months after pediatric renal transplantation.
  • This strategy is particularly beneficial for the youngest pediatric renal transplant recipients.
  • Proactive management of subclinical rejection is key to optimizing long-term graft function in pediatric kidney transplant patients.

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