ALDH7A1 and fetal growth restriction: Because fetal-maternal glucocorticoid overexposure may be a common mechanism of IUGR and multiple organ developmental disorders caused by the poor environment during pregnancy (Lesage et al., 2001; Chen et al., 2007; Liang et al., 2011; Buss et al., 2012; Pawluski et al., 2012; Xu et al., 2012; Cuffe et al., 2014; Correia-Branco et al., 2015; Sedaghat et al., 2015; He et al., 2017), the panel of reference genes selected under the PDE-induced rats IUGR model may also be applicable to rats IUGR models induced by other factors, but further verification is required.