Table 2.

Changes in the activity of SOD, CAT, and GSH-Px in control erythrocytes and in erythrocytes incubated for 24 h with DBP, BBP, MBP, and MBzP used at concentrations ranging from 0.5 to 100 μg/mL.

Compound	Concentration (µg/mL)	Activity of Antioxidant Enzymes
		SOD (U/g Hb)	CAT (µmol/min/mg Hb)	GSH-Px (µmol/min/gHb)
	0	1373.9 ± 139.2	161.97 ± 5.6	32.0 ± 3.6
DBP	0.5	1220.1 ± 79.5	159.7 ± 11.8	31.7 ± 2.5
	1	1145.1 ± 68.6	168.7 ± 21.5	27.3 ± 3.1
	2.5	1028.1 ± 79.6 *	181.3 ± 16.0	23.5 ± 2.2
	5	920.5 ± 56.3 *	215.9 ± 12.0 *	21.6 ± 3.2 *
	10	754.1 ± 44.6 *	220.7 ± 18.6 *	18.9 ± 5.4 *
	20	662.5 ± 82.2 *	238.8 ± 15.5 *	17.9 ± 6.2 *
BBP	0.5	1279.1 ± 89.7	151.5 ± 8.5	30.8 ± 4.9
	1	1165.1 ± 64.1	166.0 ± 14.3	30.4 ± 4.4
	2.5	904.6 ± 61.5 *	179.2 ± 12.3	28.5 ± 4.2
	5	841.9 ± 75.5 *	197.9 ± 13.2 *	22.7 ± 3.8*
	10	750.0 ± 95.3 *	207.1 ± 15.4 *	19.2 ± 5.1 *
	20	549.7 ± 66.6 *	231.5 ± 14.6 *	18.4 ± 5.6 *
MBP	2.5	1270.2 ± 78.5	154.1 ± 15.9	31.3 ± 5.7
	5	1177.7 ± 105.3	158.6 ± 17.1	26.1 ± 5.8
	10	837.1 ± 64.0 *	165.1 ±16.8	24.6 ± 5.5
	20	759.1 ± 82.9 *	184.6 ± 10.9	23.9 ± 1.7
	50	673.2 ± 89.4 *	201.3 ± 22.5 *	21.6 ± 1.9 *
	100	436.9 ± 59.7 *	217.2 ± 20.9 *	20.6 ± 1.9 *
MBzP	2.5	1225.7 ± 122.5	156.8 ± 19.4	33.1 ± 4.4
	5	1046.1 ± 149.7	160.4 ± 12.8	28.1 ± 6.3
	10	861.0 ± 95.2 *	179.8 ± 17.8	27.6 ± 2.8
	20	815.1 ± 87.3 *	185.4 ± 13.6	24.9 ± 3.1
	50	631.2 ± 98.1 *	216.6 ± 14.5 *	24.8 ± 6.1 *
	100	577.8 ± 67.5 *	222.0 ± 19.1 *	23.7 ± 3.6 *

Legend: SOD, superoxide dismutase; CAT, catalase; GSH-Px, glutathione peroxidase; (*) p < 0.05.