ML321 has
low cataleptic potential in C57BL/6J mice compared to
haloperidol in the horizontal bar test. Baseline responses were recorded
and then separate groups of C57BL/6J mice were injected with either
vehicle (Veh) or the indicated doses of haloperidol (HAL) or ML321
(ML). Mice were tested 60 min later for catalepsy. The latency for
a mouse to remove its paws from the bar was recorded as an index of
catalepsy (60 second maximum time). A RMANOVA observed the main effects
of time [F(1,72) = 85.874, p <
0.001] and treatment [F(7,72) =35.542, p < 0.001] as well as the time by treatment interaction [F(7,72) = 37.267, p < 0.001] to be significant.
The data are presented as means ± SEMs. N =
10 mice/group. *p < 0.05, baseline vs 60 min; ^p < 0.05, 1 mg/kg HAL vs 0.01 and 0.1 mg/kg HAL, and all doses of ML; +p < 0.05, 10 mg/kg HAL vs 0.01
and 0.1
mg/kg HAL, and all doses of ML.