Cardiac expression of SIRT1 in mice pretreated (<i>i.p.</i>) with saline (0.2 mL), RSV (5 mg/kg), and SIL (0.7 mg/kg) 24 hours prior to heart tissue collection.

<p><i>Top:</i> Western blots showing protein expression of SIRT1 and Actin (as the loading control). <i>Bottom:</i> Densitometric quantification of the Western blotting bands. The values of SIRT1 are normalized against Actin for each sample (n = 3/group, *indicates <i>P</i><0.05 vs. Saline).