Pharmacokinetic analysis was performed on each
group with WinNonLin (Pharsight, Mountain View,
CA) using a noncompartmental analysis to calculate
mean residence time (MRT), area under the moment
curve (AUMC), area under the curve (AUC), and the
AUC between 32 and 48 h (AUC32–48). Due to animal
use limitations and the availability of previously published
data, an apparent oral bioavailability (Foral) was
estimated using experimental oral data and intravenous
data from Kniffen et al. (1989), including the intravenous
dose and AUC. The following equation was used
to calculate Foral for each animal: