Valproate (VALP; 90 mg/kg; IP) was administered alone or combination with midazolam (MDZ; 3 mg/kg), ketamine (KET; 30 mg/kg), or KET+MDZ 40 min after GD-induced (118.1 µg/kg, SC) seizure onset and compared with no agent (No GD) control rats. Brain samples were processed for immunohistochemistry with NeuN antibody to visualize mature neurons. (A) Rats treated with triple therapy (GD+MDZ/KET/VALP) had significantly greater NeuN-positive (NeuN+) cells compared to rats treated with MDZ, VALP, MDZ/VALP, or KET/VALP in both the medial thalamus and the piriform cortex. Data shown are mean ± SD. *p < 0.05, **p < 0.01, ***p < 0.001, compared to No GD (B) Representative images in the thalamus (left) and piriform cortex (right) are shown for brain tissue stained with NeuN.