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Cystatin C and creatinine after successful kidney transplantation in children

A Bökenkamp1, N Ozden, C Dieterich

  • 1Children's Hospital, Hannover, Germany.

Clinical Nephrology
|December 22, 1999
PubMed

Insights

Cystatin C showed early promise as a marker for kidney transplant function in children. However, it was not more effective than creatinine in detecting acute allograft dysfunction.

Area of Science:

  • Pediatric Nephrology
  • Transplantation Immunology
  • Biomarker Discovery

Background:

  • Serum creatinine is a standard marker for renal transplant function but is less sensitive in children due to lower muscle mass.
  • Cystatin C, a protein reflecting glomerular filtration rate, is independent of age and body composition, making it a potential alternative in pediatric patients.
  • Assessing cystatin C's utility is crucial for accurate allograft monitoring in children post-renal transplantation.

Purpose of the Study:

  • To evaluate cystatin C as a sensitive marker for monitoring kidney allograft function in pediatric patients after renal transplantation.
  • To compare the performance of cystatin C with serum creatinine in detecting allograft dysfunction in children.

Main Methods:

  • Cystatin C and creatinine levels were measured daily in 24 children following successful renal transplantation.
  • Immunoturbidimetric and enzymatic methods were used for cystatin C and creatinine assays, respectively.
  • Data were collected during hospitalization to assess early allograft function and detect dysfunction.

Main Results:

  • Cystatin C levels decreased significantly within an hour post-transplantation, indicating early graft function.
  • Both cystatin C and creatinine showed comparable day-to-day variations at steady-state.
  • During acute rejection episodes, both markers increased, with creatinine showing a more pronounced rise.

Conclusions:

  • Cystatin C serves as an early indicator of kidney allograft function after successful renal transplantation in children.
  • Cystatin C did not demonstrate superiority over creatinine in identifying acute allograft dysfunction in this pediatric cohort.
  • Further research may explore combined marker strategies for enhanced allograft monitoring.
Abstract

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