Quercetin (179) significantly inhibits the activation of p65/nuclear factor-kappa B (NF-κB) and the extracellular signal-regulated kinase 1/2/mitogen-activated protein kinase (ERK1/2/MAPK) pathways, as well as the levels of caspase-9 and caspase-3 in the liver tissue of mice with DM [57]. The gene discussed is MAPK3; the disease is diabetes mellitus.