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Rasburicase improves hyperuricemia in infants with acute kidney injury

David J Hobbs1, Julia M Steinke, Jin Y Chung

  • 1Pediatric Nephrology, Dialysis and Transplantation, Helen DeVos Children's Hospital and Michigan State University College of Human Medicine, 221 Michigan Street SE, Suite 406, Grand Rapids, MI 49503, USA.

Pediatric Nephrology (Berlin, Germany)
|November 26, 2009
PubMed

Insights

Rasburicase effectively treated hyperuricemia in infants with acute kidney injury (AKI). A single dose normalized uric acid levels and improved kidney function without side effects, showing promise for this novel treatment.

Area of Science:

  • Nephrology
  • Pediatrics
  • Biochemistry

Background:

  • Elevated uric acid (UA) levels are increasingly linked to renal disease progression.
  • Rasburicase, a recombinant urate oxidase, is a proven treatment for hyperuricemia in tumor lysis syndrome.
  • Its potential in managing hyperuricemia secondary to acute kidney injury (AKI) in infants requires investigation.

Purpose of the Study:

  • To evaluate the safety and efficacy of rasburicase in treating hyperuricemia in infants diagnosed with AKI.
  • To assess the impact of rasburicase on serum uric acid levels, renal function, and urinary output in this pediatric population.

Main Methods:

  • A retrospective chart review was conducted on infants with hyperuricemia (UA > 8 mg/dl) and AKI (serum creatinine > 1.5 mg/dl).
  • Seven infants received a single, intravenous bolus of rasburicase (0.17 ± 0.04 mg/kg).
  • Data on serum UA, creatinine levels, and urinary output were collected before and after treatment.

Main Results:

  • Within 24 hours, serum UA decreased significantly (13.6 to 0.9 mg/dl, P < 0.05), and creatinine levels improved (3.2 to 2.0 mg/dl, P < 0.05).
  • Urinary output increased significantly (2.4 to 5.9 ml/kg/hr, P < 0.05) post-treatment.
  • Sustained improvements were observed in the following week without UA rebound, and no treatment-related side effects were reported.

Conclusions:

  • A single intravenous dose of rasburicase is a safe and effective novel treatment for hyperuricemia in infants with AKI.
  • Rasburicase facilitated normalization of uric acid levels and improved renal function, potentially avoiding the need for renal replacement therapy.

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