Glutathione, catalase, and superoxide dismutase are antioxidant enzymes that can reduce the damage of oxidative stress in the lungs of asthma patients [7,42], and MDA is the most abundant reactive aldehyde in lipid peroxidation, which is an important signal molecule for cell damage and can be used as an indicator of oxidative stress in cells and tissues [43]. Here, CAT is linked to asthma.