SIRT1 and fetal growth restriction: Western blot revealed no significant difference in Sirtuin-1 expression between ECFCs from CTRL and IUGR rats (CTRL (n = 5) vs. IUGR (n = 4) (mean (A.U.)± SEM): 1.82 ± 0.42 vs. 1.54 ± 0.17; p > 0.05) (Figure 11).