PHGDH and schizophrenia: In addition to actions on the glutamate-GABA systems, oxytocin had other wide-ranging effects including on proteins involved in cell structure and plasticity—tubulin-α dihydropyrimidinase-related protein 2 (DRP-2) and D-3-phosphoglycerate dehydrogenase (3-PGDH) [62–64]; and mitochondrial function—upregulating ATP synthase subunit alpha [65]; DJ-1 [66], and enolase (linked to recovery of cerebral metabolism in patients with schizophrenia treated with anti-psychotic medication [67]).