Effects of local administration of agonists of Sxc, mGluR, and GABAA receptors into the mPFC on systemic MK801-evoked L-glutamate release in the mPFC. (A,B) indicate the effects of perfusion with L-AP4 (30 and 100 μM), MUS (1 μM) [5,6], NAC (0.5 and 1 mM), and LY354740 (30 and 100 μM) into the mPFC (gray bars) on systemic MK801-evoked L-glutamate release in the mPFC, compared with MK801 alone (1 mg/kg, i.p.) from (A). Ordinates: mean ± SD (n = 6) of the extracellular L-glutamate level in the mPFC (μM), abscissa: time after administration of 1 mg/kg MK801 (min). Black arrows indicate the intraperitoneal injection of MK801. Microdialysis was conducted to measure the L-glutamate release in the mPFC. (C) indicates the AUC value of the extracellular L-glutamate level in the mPFC (μM) after MK801 injection from 0 to 180 min of (A,B). * p < 0.05, ** p < 0.01; relative to 1 mg/kg MK801 alone (control) using LMM with Tukey’s post hoc test.