SST and major depressive disorder: Interestingly, dysregulation of PFC SST expression is implicated in numerous psychiatric disorders, including depression, bipolar disorder, and schizophrenia (Beneyto et al., 2012; Fung et al., 2014; Hashimoto et al., 2008; Lin & Sibille, 2015; Morris et al., 2008; Pantazopoulos et al., 2017; Seney et al., 2015; Tripp et al., 2011).