Fig. 4

Protein expression changes in senescent EPCs with PJ34 treatment. a–c Poly (ADP-ribose) polymerase 1 (PARP1), poly ADP-ribose (PAR), sirtuin 1 (SIRT1), acetylated (ac)-p53, p53, and p21 were detected by Western blot after 24 h of treatment. *P < 0.05, **P < 0.01, ***P < 0.001, versus the control; #P < 0.05, ##P < 0.01, ###P < 0.001, versus H2O2 treatment