MMP9 and kidney disorder: While there are several reports of MMP-9 in kidney diseases (Chang et al., 2006; Rysz et al., 2007; Peiskerova et al., 2009; Van Der Zijl et al., 2010; Bojic et al., 2015; Gluba-Brzozka et al., 2016; Hernandez-Hernandez et al., 2017), as a function of the subjects included, the methodology employed and the fluid analyzed (urine), there are few with which we can compare our findings.