GLUL and schizophrenia: In the lactate shuttle, six (55%) of the significantly altered genes (n = 11) were upregulated: GLUL, LDHC, SLC16A3, SLC1A2, SLC1A3, and SLC2A1, which were collectively expressed in schizophrenia groups at a level of 1.5× higher than in control groups (LFC = 0.58).