Effect of SKI3246 on lower gastrointestinal motility in the native guinea pigs. (A) Effect of SKI3246 on the cumulative number of egested pellets in guinea pigs in the native condition (control group, n = 7; treatment groups, n = 6). The cumulative number of egested pellets did not differ among the four groups, including a control group and groups treated with SKI3246 at 150, 300, and 600 mg/kg by the repeated measures ANOVA test or Greenhouse-Geisser correction method. There was no group effect (F = 0.054, P = 0.983), whereas time effect was present (F = 42.87, P < 0.001). (B) Effect of SKI3246 on cumulative weight of egested pellets in guinea pigs in the native condition (control group, n = 7; treatment groups, n = 6). The cumulative weight of egested pellets did not differ among the four groups, including a control group and groups treated with SKI3246 at 150, 300, and 600 mg/kg by the repeated measures ANOVA test or Greenhouse-Geisser correction method. There was no group effect (F = 0.235, P = 0.639), whereas time effect was present (F = 30.41, P < 0.001). The error bars indicate standard deviation.