Table 3.
Plasma pharmacokinetic parameters of paclitaxel after oral treatment of the SMEOF#3 formulation (with 1.5% w/w and 3.0% w/w paclitaxel) at different doses of 10, 30, or 60 mg/kg or after i.v. administration of paclitaxel in a Polysorbate80: ethanol solution in P-gp knockout and/or wild-type mice co-administered with or without Cyclosporin A (10 mg/kg). Data are mean ± Standard error (SE), oral and i.v. administration (n = 5)
Paclitaxel formulation | Paclitaxel | Cyclosporin A | AUC0-Tlast (ng/mL*h) | F (%) |
---|---|---|---|---|
P-gp knockout mice | ||||
SMEOF#3, (1.5%) | 10 mg/kg, p.o. | – | 1841 ± 166 | 29.9 ± 3.1 |
SMEOF#3, (1.5%) | 30 mg/kg, p.o. | – | 7110 ± 382 | 38.6 ± 2.8 |
SMEOF#3, (1.5%) | 60 mg/kg, p.o. | – | 11220 ± 1131 | 30.4 ± 3.4 |
Polysorbate 80:EtOH | 10 mg/kg, i.v. | – | 6147 ± 291 | n/a |
Wild-type mice | ||||
SMEOF#3, (1.5%) | 10 mg/kg, p.o. | 10 mg/kg, p.o. | 2090 ± 174 | 15.2 ± 1.5 |
SMEOF#3, (1.5%) | 30 mg/kg, p.o. | 10 mg/kg, p.o. | 3835 ± 430 | 9.3 ± 1.1 |
SMEOF#3, (1.5%) | 60 mg/kg, p.o. | 10 mg/kg, p.o. | 5916 ± 765 | 7.2 ± 1.0 |
Polysorbate 80 EtOH | 10 mg/kg, i.v. | 10 mg/kg, p.o. | 13754 ± 670 | n/a |
P-gp knockout mice | ||||
SMEOF#3, (3.0%) | 10 mg/kg, p.o. | 1710 ± 131 | 27.8 ± 2.5 | |
SMEOF#3, (3.0%) | 30 mg/kg, p.o. | 3871 ± 621 | 21.0 ± 3.5 | |
SMEOF#3, (3.0%) | 60 mg/kg, p.o. | 1764 ± 168 | 4.8 ± 0.5 |
AUC0-Tlast Area under the concentration time curve from 0 to the last time point with a concentration above the LLQ (Tlast), F oral bioavailability, n/a not applicable