FA-RC vs EXP-RC FA-HF vs EXP-HF heart lung heart lung VCAM-1 ns ns ns < 0.01 ICAM-1 ns ns ns ns MMP-9 < 0.05 ns < 0.01 ns E-selectin <0.05 ns ns ns IL-6 ns ns ns < 0.05

Table 3: Statistical analysis (ANOVA) results of gene expression comparing PM2.5 and filtered air exposed lean and obese mice groups. FA-RC, filtered air - regular chow; EXP-RC, exposure concentrate air containing PM2.5- regular chow; FA-HF, filtered air - high-fat diet; EXP-HF, exposure concentrate air containing PM2.5- highfat diet; ns, non-significant.