SST and epilepsy: For example, while our focus on PV+ interneurons was derived in part from the expression of the α2δ-2 protein in this cell type, other interneuron types, such as somatostatin-expressing interneurons, also decrease in density in certain forms of epilepsy (Santhakumar et al., 2000; Hofmann et al., 2016) and were not examined here.