Figure 7.
Representative western blots and statistics (A) showed that AKT/sirtuin 1 expression significantly increased in the simvastatin-pre-treated cells 6 and 24 h after radiation in vitro. The expression of B-cell lymphoma-2 (Bcl-2), p53, poly(ADP-ribose) polymerase (PARP) expression and p53 phosphorylation was not significantly altered following radiation and simvastatin treatment (B). Values are the means ± SEM. C, control; S, simvastatin; R, ionizing radiation; radiation + simvastatin (RS), IR + simvastatin; n=6, *P<0.05 vs. C group; #P<0.05 vs. R group (One-way ANOVA, Newman-Keuls multiple comparison test).