The Effect of a Short-Term Exposure to Lead on the Levels of Essential Metal Ions, Selected Proteins Related to Them, and Oxidative Stress Parameters in Humans

Table 6

The comparison between subgroups of smokers and nonsmokers. B: whole blood; E: erythrocyte; L: leukocyte; D: a difference between the levels at baseline (1) and at the end of the study period (2).

	Nonsmokers		Smokers		value
	Mean	SD	Mean	SD
Age (years)	40.09	13.62	41.40	13.93	0.795
BMI	27.42	3.51	25.17	3.65	0.094
B-Pb-1 (μg/dl)	10.42	7.18	10.82	8.03	0.886
B-Pb-2 (μg/dl)	49.33	10.94	49.04	15.60	0.956
B-Pb-D (μg/dl)	38.91	12.25	38.23	16.13	0.902
Ca-1 (mg/dl)	110.48	5.85	113.46	6.14	0.184
Ca-2 (mg/dl)	120.04	4.89	114.65	9.07	0.018
Ca-D (mg/dl)	9.55	8.62	1.19	10.56	0.027
E-SOD-1 (NU/mg Hb)	168.74	18.76	183.07	19.55	0.048
E-SOD-2 (NU/mg Hb)	174.51	29.20	176.31	22.37	0.841
E-SOD-D (NU/mg Hb)	5.77	25.72	−6.76	28.63	0.221
L-CuZn-SOD-1 (NU/mg P)	10.44	2.15	11.45	2.01	0.186
L-CuZn-SOD-2 (NU/mg P)	13.24	2.23	11.11	3.59	0.078
L-CuZn-SOD-D (NU/mg P)	2.80	3.80	−0.34	3.98	0.034
L-CAT-1 (U/mg P)	35.78	8.49	39.24	11.41	0.374
L-CAT-2 (U/mg P)	37.14	7.78	46.53	15.93	0.023
L-CAT-D (U/mg P)	1.36	12.38	7.29	20.06	0.373