Distribution of antioxidant capacity ((a) thiol and (b) TAC (total antioxidant capacity)) by groups. C = control; ISOC = isoproterenol without any pretreatment; CC = curcumin solution, in doses of 100 mg/kg bw (CC100), 150 mg/kg bw (CC150), and 200 mg/kg bw (CC200); CCNP = curcumin nanoparticle solution, in doses of 100 mg/kg bw (CCNP100), 150 mg/kg bw (CCNP150), and 200 mg/kg bw (CCNP200). The Roman and Greek letters correspond to the p values < 0.05: aISOC compared to C, bCC100+ISO compared to ISOC, cCC150+ISO compared to ISOC, dCC200+ISO compared to ISOC, eCCNP100+ISO compared to ISOC, fCCNP150+ISO compared to ISOC, gCCNP200+ISO compared to ISOC, ACC100+ISO compared to CC150+ISO, BCC150+ISO compared to CC200+ISO, CCC100+ISO compared to CC200+ISO, YCCNP150+ISO compared to CCNP200+ISO, ZCCNP100+ISO compared to CCNP200+ISO, αCC100+ISO compared to CCNP100+ISO, βCC150+ISO compared to CCNP150+ISO, and μCC200+ISO compared to CCNP200+ISO.