TSPO and heart failure: We and others have shown that the 18-kDa translocator protein (TSPO), previously known as the peripheral benzodiazepine receptor (PBR), likely plays a key role in cardiac injury during heart failure and myocardial infarction (Mestre et al., 1985; Akar et al., 2005; Brown et al., 2008; Morin et al., 2016; Musman et al., 2017; Thai et al., 2018).