RB1 and fetal growth restriction: In contrast, a decreased pRb/Rb ratio (−30%; p < 0.01) (Figure 12B), as well as FoxO1 (−71%; p < 0.05) (Figure 12F) and sirtuin-1 (−54%; p < 0.05) (Figure 12G) protein expressions, were observed in IUGR vs. CTRL male livers.