TABLE 3

Pharmacokinetic parameters of SAC, NAc-SAC, SACS, and NAc-SACS in rats after oral and i.v. administration

Data represent mean ± S.D. of three to four rats

ParametersSACaNAc-SACaSACSaNAc-SACSa
i.v.Orali.v.i.v.i.v.
Cmax (mg/l)6.2 ± 0.563.9 ± 0.6413 ± 2.715 ± 1.814 ± 1.7
tmax (h)0.27 ± 0.17
t1/2 (h)1.1 ± 0.271.2 ± 0.191.0 ± 0.250.99 ± 0.130.84 ± 0.41
CL (l/h/kg)0.91 ± 0.0351.8 ± 0.341.5 ± 0.131.3 ± 0.19
CLr (l/h/kg)0.00861.50.00141.2
Vss (l/kg)1.0 ± 0.0720.94 ± 0.210.75 ± 0.0560.45 ± 0.028
Bioavailability (%)92.1
AUC (mg·l/h)
SAC5.50 ± 0.215.07 ± 0.581.87 ± 0.33n.d.n.d.
NAc-SAC1.80 ± 0.191.96 ± 0.392.89 ± 0.66n.d.n.d.
SACS0.057 ± 0.0130.062 ± 0.014n.d.3.47 ± 0.32n.d.
NAc-SACS0.11 ± 0.0250.11 ± 0.0130.13 ± 0.0731.29 ± 0.0904.05 ± 0.64
GSAC0.063 ± 0.0110.059 ± 0.0110.010 ± 0.001n.d.n.d.
  • n.d., not detected; tmax, time to reach Cmax; Vss, distribution volume at steady state.

  • a A single oral or i.v. dose (5 mg/kg) of SAC, NAc-SAC, SACS, and NAc-SACS was administered to rats.