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. 2024 Nov 1;21:42. doi: 10.1186/s12950-024-00416-8

Fig. 7.

Fig. 7

Relative expression of genes encoding ROS-detoxifying enzymes. RT-qPCR analysis of differentially expressed ROS-related genes, (A) Cat, (B) Sod2, (C) Gsr, and (D) Gpx1. Expression of each enzyme level was quantified and normalized to GAPDH. COPD, chronic obstructive pulmonary disease; Cat, catalase; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; Gpx, glutathione peroxidase; Gsr, glutathione reductase; PM, particulate matter; ROS, reactive oxygen species; Sod2, superoxide dismutase. *: p < 0.05, **: p < 0.01, and ****: p < 0.0001, ns: non-significant