Figure 4 | Scientific Reports

Figure 4

From: Metabolic changes of H2S in smokers and patients of COPD which might involve in inflammation, oxidative stress and steroid sensitivity

Figure 4

Effects of H2S on the release of TNF-α and IL-8 in U937 cells.

Immediately after CS exposure, U937 cells were treated with increasing concentrations of GYY4137 (100–500 μM). TNF-a (a) and IL-8 (b) were evaluated by enzyme-linked immunosorbent assay. *P < 0.05, **P < 0.01 vs. control; #P < 0.05, ##P < 0.01 vs. CS. n = 4–6 experiments, GYY: GYY4137.

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