The gene expression level of GPX1, GPX4, CAT, SOD1, SOD2 and UCP2 was significantly suppressed in the asthma group, compared to the control group, and was promoted comparing with that by the asthma+YFP group (∗∗P < 0.01 vs. control, ∗∗∗P < 0.001 vs. control, and ###P < 0.001 vs. asthma). The gene discussed is SOD2; the disease is asthma.