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  • 1
    ISSN: 1432-0843
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The clinical pharmacokinetics of VM26 and VP16-213 were assessed in 15 children (median age 10 years) with acute leukemia, using a new high-performance liquid chromatography—electrochemical assay. Pharmacokinetic parameters were calculated by both model-dependent and compartment model-independent methods. These studies demonstrated substantial differences in the central volumes of distribution (VDc), steady-state volumes of distribution (VDss) and systemic clearances (Cls) of VM26 and VP16-213; with the VDc, VDss, and Cls all being smaller for VM26. Systemic clearances determined by model-independent methods were 5.2±1.0 ml/min/m2 (mean±SD) for VM26 and 17.8±11.2 ml/min/m2 for VP16-213. The major metabolites detected in serum and urine were the hydroxy acids. Low levels of the picro-lactone isomers were detected in some patients while the aglycones were not detected in the serum or urine of any patients.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-0646
    Keywords: bisantrene ; Phase I ; pharmacokinetics ; pediatric solid tumors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Fourteen patients with pediatric malignant solid tumors, median age 15 years, received 22 courses of bisantrene in a Phase I study. Dosage escalations ranged from 10 to 120 mg/m2 daily for 5 consecutive days. Toxicity included myelosuppression and phlebitis. A sensitive (detection limit of 2 ng/ml) and specific HPLC method was developed to quantitate bisantrene in patient's plasma and urine. Peak plasma concentrations at the end of 60 minute infusions ranged from 568 ng/ml at 10 mg/m2 to 6800 ng/ml at the 100 mg/m2 dosage. The elimination half life (T 1/2β) averaged about 10 hours but increased to 20 hours in a patient with liver disease. Only 2.4–10% of the bisantrene dose was eliminated in the urine suggesting that the liver may be the major route of elimination for this antineoplastic anthracene derivative.
    Type of Medium: Electronic Resource
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