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. 2020 Mar 9;19(5):3227–3238. doi: 10.3892/etm.2020.8590

Figure 6.

Figure 6

Figure 6

Effect of HO-1 on PM2.5 exposure-induced cell apoptosis in human melanocytes. PIG1 or PIG3V cells were pretreated with 10 µM ZnPP or 10 µM Hemin for 2 h prior to incubation with (200 µg/ml) PM2.5 for 24 h. HO-1 expressions in (A) PIG1 and (B) PIG3V cells. Effects of HO-1 on the reduction of cell viability induced by PM2.5 in (C) PIG1 and (D) PIG3V cells. *P<0.05 vs. 0 µg/ml PM2.5, #P<0.05 vs. 200 µg/ml PM2.5. Effects of HO-1 on PM2.5 induced cell apoptosis in (E) PIG1 and (F) PIG3V cells. Data are presented as the mean ± SD. n=6. *P<0.05 vs. respective Ctrl; #P<0.05 vs. PM2.5. PM2.5, particulate matter 2.5; HO-1, heme oxygenase-1; ZnPP, Zinc protoporphyrin; Hemin, hemin chloride; Ctrl, control; PI, propidium iodide.