TABLE 4

Pharmacokinetic parameters for NS-304 and MRE-269 after oral administration of NS-304 to healthy male volunteers (microdose study)

After administration of NS-304 (100 μg, aqueous solution), blood samples were collected at various times, plasma was prepared, and the plasma concentrations of NS-304 and MRE-269 were determined by LC/MS/MS. Each value is the mean ± S.D., n = 5.

Parameter NS-304 MRE-269
Tmax (h) 0.7 ± 0.3 2.0 ± 1.2
Cmax (ng/ml) 4.1 ± 2.2 2.0 ± 0.4
t1/2 (h) 1.7 ± 1.1 7.9 ± 3.3
Area under the curve(0-∞) (ng · h/ml) 5.8 ± 2.1 13.4 ± 5.8