PMID: 9165564May 1, 1997Paper

Pharmacokinetics of mycophenolate mofetil and intravenous ganciclovir alone and in combination in renal transplant recipients

Pharmacotherapy
E J WolfeF T Aweeka

Abstract

To evaluate the pharmacokinetics of mycophenolic acid and its glucuronide metabolite alone and in the presence of ganciclovir, and to determine the pharmacokinetics of ganciclovir alone and in combination with mycophenolate mofetil. Randomized, open-label, three-way crossover study. Twelve kidney transplant recipients. Mycophenolate mofetil 1500 mg orally and ganciclovir 5 mg/kg intravenously were each given alone and in combination with at least a 1-week washout period between treatment arms. Blood samples were obtained to measure mycophenolic acid and ganciclovir by high-performance liquid chromatography. Mean (+/-SD) oral plasma clearance for mycophenolic acid alone and with ganciclovir was 3.11 +/- 0.72 and 3.19 +/- 0.72 ml/min/kg (p = 0.64). The overall disposition of the major metabolite, MPA-glucuronide, was unchanged, with approximately 70% of the administered dose eliminated as the glucuronide conjugate for both arms of the study. Mean genciclovir serum clearance was 1.80 +/- 0.58 ml/min/kg for ganciclovir and 1.70 +/- 0.55 ml/min/kg for ganciclovir plus mycophenolate mofetil (p = 0.11; 10 patients). Renal clearance of ganciclovir was decreased when the drugs were administered in combination, 1.43 +/- 0.54 (ganciclovir...Continue Reading

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