Nrf2 is certainly expressed in the heart under normal conditions and some studies have shown that it is upregulated during stress conditions like cardiac hypertrophy. In fact, upregulation of Nrf2 is cardioprotective (Arterioscler Thromb Vasc Biol. 2009;29:1843-1850, Cardiovascular Research (2009) 83 , 354 – 361, Cardiovasc Res (2011) 90 (2): 315-324)