SOD2 and diabetes mellitus: Our results showed that maternal diabetes (STZ/WT) treatment significantly decreased the mRNA levels of RORA, CYP19A1 and SOD2 in the amygdala compared to the CTL/WT group, and intestine-specific RORA deficiency (RORA−/−) showed no effect on gene expression (see Additional file 1: Fig. S5a).