Laboratory Studies
Iloperidone performed well against a prepulse inhibition (PPI) experiment, which was designed to gauge the extent of sensory gating in rats, a process disrupted in schizophrenia. Prepulse inhibition is the reduction in the amount of startle the subject gives when presented with a non-startling stimulus. Those exhibiting high levels of psychosis present a deficit in PPI. Psychosis induced using PCP, apomorphine, and cirazoline, were all prevented with the concurrent administration of iloperidone. The PPI deficit normally incurred by each psychotic drug was significantly diminished by the co administration of iloperidone. The results of this experiment provided strong evidence for iloperidone’s merit as an effective treatment for psychotic disorders. Iloperidone has also been shown to reduce the effects of apomorphine induced climbing behavior in mice as well as the effects of head twitching induced by 5-HT in rats.
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