MMP9 and epilepsy: Based on studies performed on animal models as well as on human tissue remnants, with respect to MMPs, MMP-9 is particularly associated with epilepsy, with epileptic activity leading to upregulation of MMP-9 (Szklarczyk et al., 2002; Konopacki et al., 2007; Wilczynski et al., 2008; Takács et al., 2010; Li et al., 2012; Acar et al., 2015; Pijet et al., 2018).