PPARGC1A and hydrops fetalis: As showed in Fig. 4, by two-way ANOVA, we revealed that the mRNA expression of PGC1-α in retroperitoneal adipose tissue was decreased by postnatal HF diet (Hit 2, p < 0.001), but not by prenatal dexamethasone treatment (Hit 1), and there was no interaction between Hit 1 and Hit 2.