Table 2.

Gene expression levels of CCL2, IL8, TNF, OGG1 and HMOX1 in PBMCs from 60 overweight elderly subjects after 5h of exposure to particles from an urban street or filtered air

	Particle-filtered air		Non-filtered air
	Before	After	Before	After
CCL2	0.23±0.06	0.37±0.10	0.29±0.07	0.28±0.09
IL-8	32.0±7.0	34.6±8.0	32.0±7.0	31.2±8.0
TNF	2.0±0.3	4.7±1.7	2.6±0.6	2.9±0.5
OGG1	8.3±1.7	14.6±3.2	12.8±2.7	10±2.9
HMOX1	9.3±1.7	12.7±2.6	11.9±2.3	10.2±1.9

The data are mean ±SEM per 10⁶ 18S mRNA.