NR4A3 and cardiac hypertrophy: Some other studies have reported that NOR1 is required for the induction of neosynephrine-induced cardiac hypertrophy (Philipp et al., 2021) (Table 1), and isoprenaline, another β-adrenergic agonist, has been found to induce NOR1 expression in mouse cardiac tissue, although no functional relationships have been established (Myers et al., 2009) (Table 1).