TY - JOUR
T1 - Efficacy, Toxicity, Pharmacokinetics, and in Vitro Metabolism of the Enantiomers of Ifosfamide in Mice
AU - Masurel, Dominique
AU - Young, Connie L.
AU - Wainer, Irving W.
AU - Houghton, Peter J.
PY - 1990/1/15
Y1 - 1990/1/15
N2 - The enantiomers of the anticancer drug ifosfamide, (+(R)IFF and (-)-(S)-IFF, were prepared from the racemic compound rac-IFF using enantioselective liquid chromatographic techniques. The efficacy, toxicity, and pharmacokinetics of the individual enantiomers and rac-IFF were studied in mice. The results of the studies indicate that there were no statistically significant differences between the efficacy of (+)-(R)IFF, (-)-(S)-IFF, and rac-IFF against childhood rhabdomyosarcoma (HxRh28) maintained in vivo as a xenograft in immune-deprived female CBA/CaJ mice. Similar results were found in toxicity and pharmacokinetic studies conducted in non-tumor-bearing female CBA/CaJ mice. The production of two major metabolites, aldoifosfamide and isophosphor-amide mustard, by mice hepatic microsomes from non-tumor-bearing female CBA/CaJ mice was also investigated. There were no statistically significant differences in the calculated kinetic parameters, Vmax and K109 of the production of these two metabolites when the separate enantiomers or the racemic mixture were used as substrate.
AB - The enantiomers of the anticancer drug ifosfamide, (+(R)IFF and (-)-(S)-IFF, were prepared from the racemic compound rac-IFF using enantioselective liquid chromatographic techniques. The efficacy, toxicity, and pharmacokinetics of the individual enantiomers and rac-IFF were studied in mice. The results of the studies indicate that there were no statistically significant differences between the efficacy of (+)-(R)IFF, (-)-(S)-IFF, and rac-IFF against childhood rhabdomyosarcoma (HxRh28) maintained in vivo as a xenograft in immune-deprived female CBA/CaJ mice. Similar results were found in toxicity and pharmacokinetic studies conducted in non-tumor-bearing female CBA/CaJ mice. The production of two major metabolites, aldoifosfamide and isophosphor-amide mustard, by mice hepatic microsomes from non-tumor-bearing female CBA/CaJ mice was also investigated. There were no statistically significant differences in the calculated kinetic parameters, Vmax and K109 of the production of these two metabolites when the separate enantiomers or the racemic mixture were used as substrate.
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M3 - Article
C2 - 2295063
AN - SCOPUS:0025017736
SN - 0008-5472
VL - 50
SP - 252
EP - 255
JO - Cancer Research
JF - Cancer Research
IS - 2
ER -