Table 4

Effects of S-5751 and S-1452 on antigen-induced increase in the number of inflammatory cells in bronchoalveolar lavage fluid in guinea pig asthma model

ChallengeCompoundDosenCell Number (×106/animal)
Total CellsEosinophilsMacrophages
mg/kg
Saline43.2  ± 0.51.5  ± 0.41.6  ± 0.2
AntigenVehicle517.1  ± 2.24-167 5.0  ± 0.64-167 10.3  ± 1.54-167
S-57511069.7  ± 2.34-150 2.9  ± 0.74-150 5.6  ± 1.44-150
Saline83.0  ± 0.30.5  ± 0.12.1  ± 0.2
AntigenVehicle612.1  ± 1.94-167 4.2  ± 0.84-167 5.1  ± 0.74-167
S-145210813.8  ± 1.74.9  ± 0.75.7  ± 0.9

Bronchoalveolar lavage performed 24 h after the last antigen challenge, respectively. S-5751 and S-1452 were orally administered 1 and 2 h before antigen challenge, respectively.

  • Statistical significance.

  • 4-167P < 0.01 versus saline challenge by Student's t test.

  • 4-150P < 0.05 versus vehicle control by Dunnett's test.