PPARGC1A and hydrops fetalis: Previous studies have found that HG/[6]‐GR can promote mitochondrial energy metabolism and protects H9c2 cells from HF via up‐regulating the PPARα/PGC‐1α/Sirt3 pathways.24 However, the anti‐HF effect of HG/[6]‐GR has not been systematically studied in vivo.