Figure 4
From: Cigarette smoke regulates the expression of TLR4 and IL-8 production by human macrophages
IL-8 expression is ROS dependent after CSM exposure. MDMs (5 × 106 cells/ml) were pretreated with NAC (10 mM) for 30 min and then stimulated by CSM (0.03, 0.06 and 0.12 OD) for 4 h. RNA was extracted and mRNA levels of IL-8 were quantified by real-time PCR (A). Results are expressed as copies of IL-8 vs. copies of GAPDH mRNA. (B) MDMs (1 × 106 cells/ml) were pretreated with NAC (10 mM) for 30 min and then stimulated by CSM (0.06 OD) for 16 h Supernatants were collected after 16 h incubation and IL-8 production was quantified using ELISA methods. *P < 0.05 vs baseline # P < 0.05 vs CSM stimulated (n = 3).