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Previous studies have shown that the metabotropic glutamate receptor (mGluR)2/3 agonist LY354740 attenuated glutamate release in medial prefrontal cortex (mPFC) induced by the non-competitive N-methyl-d-aspartate (NMDA) receptor antagonist phencyclidine. In the present study we examined the effects of the more potent mGluR2/3 selective agonist LY379268 on ketamine-evoked glutamate and dopamine (DA)...
The present experiment tested whether previous exposure to amphetamine would enhance rats' predisposition to self-administer a high dose of the drug under fixed (FR) and progressive ratio (PR) schedules of reinforcement. Rats in different groups were given five injections of either amphetamine (1.5 mg/kg, i.p.) or saline (1.0 ml/kg, i.p.), one injection administered every third day and, starting 10...
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