VU0285683 dose-dependently decreases marble-burying to a level comparable
with that of MTEP. Dose-response curves for the effects of MTEP (A) and
VU0285683 (B). The data are the mean number of marbles buried when tested
with vehicle and 3, 5.6, 10, and 15 mg/kg MTEP or 3, 5.6, and 10 mg/kg
VU0285683 during a 30-min test session. Each value represents the mean +
S.E.M. for 9 to 11 animals. The vehicle-treated group buried approximately
nine marbles over the 30-min time course. The positive comparator MTEP
produced a significant inhibition of marble-burying behavior at a dose of 10
mg/kg (p < 0.005) and 15 mg/kg
(p < 0.0001). VU0285683 dose-dependently
inhibited marble burying over the course of the 30-min interval, significant
at a dose of 10 mg/kg VU0285683 (p = 0.0001).