NFE2L2 and type 2 diabetes mellitus: The study’s findings indicate that Met and/or Sem have a restorative effect on T2DM and PD-induced changes in neurobehavioral and biochemical/molecular indices ascribed to the improvement of endogenous antioxidant systems, decreased lipid peroxidation, suppression of oxidative/inflammatory stress, and—most importantly—regulation of Nrf2 and caspase 3.