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Rationale Repeated exposure to psychostimulants that either increase dopamine (DA) release or target N-methyl-d-aspartate (NMDA) receptors can induce behavioural sensitisation, a phenomenon that may be important for the processes of addiction and even psychosis. A critical component of behavioural sensitisation is an increase in DA release within mesocorticolimbic circuits. In particular, sensitisation...
Rationale It was recently reported that administration of the metabotropic glutamate 2 and 3 (mGlu2/3) receptor agonist prodrug LY2140023 to schizophrenic patients decreased positive symptoms. However, at the single, potentially suboptimal, dose that was tested, LY2140023 trended towards being inferior to olanzapine on several indices of efficacy within the Positive and Negative Syndrome Scale. ...
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