Figure 1. NAC enhances plasma NOx concentrations following DE exposures.
A) Animals exposed to whole DE (approximately 3.2 ppm NO) with or without NAC for 1 hr (N=6/gp). B) Plasma NOx levels from animals exposed to whole DE with or without NAC for 2 hr (N=6/gp). C) Plasma NOx concentrations in rat plasma following 1 hr exposure to a pure NO (0, 3 and 10 ppm) atmosphere (N=6–10/gp). In addition, in a smaller cohort of rats, NOx levels were determined at 2 hr post exposure to 10 ppm NO (N=2) and 4 hr post exposure to 10 ppm NO (N=4). D) Pretreatment with NOS inhibitor L-NNA in filtered air or 10 ppm NO-exposed rats. Panels A and B, * p<0.05 vs FA/Saline and FA/NAC control,
† p<0.05 vs. DE/Saline; Panel C,
* p<0.05 vs Filtered Air and 4 hr post-exposure; Panel D,
* p<0.05 vs 0 ppm, † p<0.05 vs. 0 ppm + L-NNA.