Dual Stimulus-Dependent Effect of Oenothera paradoxa Extract on the Respiratory Burst in Human Leukocytes: Suppressing for Escherichia coli and Phorbol Myristate Acetate and Stimulating for Formyl-Methionyl-Leucyl-Phenylalanine

Table 2

Antioxidant enzyme activities after treatment with the extract.

Enzyme	Control	O. paradoxa extract
		0.1 mg/mL	0.25 mg/mL
CAT U/mg of protein	74.98 ± 17.93	75.27 ± 16.96	76.87 ± 18.76	ns
GPx U/mg of protein	0.16 ± 0.05	0.16 ± 0.25	0.17 ± 0.06	ns
SOD % of inhibition	32.40 ± 9.41	33.15 ± 8.10	35.80 ± 9.07	ns

Values represented as mean ± SD of three independent experiments.
CAT: catalase; GPx: glutathione peroxidase; SOD: superoxide dismutase.
ns: not significant as assessed by Wilcoxon’s test.