Sample No | Before | After clean air | Before | After wood smoke | |||||
1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | ||
Exhaled air: | |||||||||
FENO50 (ppb) | 14.5 (6.1–93) | 16.3 (6.0–86) | 15.2 (5.5–71) | 18.7 (6.5–79) | 18.7 (3.7–52) | 17.0 (5.4–49) | 14.1 (4.4–44) | 14.5 (4.7–50) | |
FENO270 (ppb) | 4.9 (2.4–21) | 4.2 (2.4–21) | 4.4 (1.9–16) | 5.2 (3.0–16) | 4.3 (1.7–13) | 5.0 (1.5–12) | 4.8* (1.6–11) | 4.2 (1.7–11) | |
Alveolar NO (ppb) | 1.3 (0.5–3.2) | 2.1 (0.6–5.5) | 1.3 (0.4–2.3) | 2.7 (0.9–4.6) | 1.2 (0.2–3.3) | 1.9 (0.5–3.8) | 2.0* (0.8–3.0) | 1.9 (0.2–3.7) | |
Breath condensate: | |||||||||
MDA† (μmol/l) | 0.012 (0.003–0.029) | 0.003 (0.003–0.01) | 0.003 (0.003–0.025) | 0.003 (0.003–0.021) | 0.003 (0.003–0.011) | 0.003* (0.003–0.026) | 0.005 (0.003–0.11) | 0.007*** (0.003–0.03) | |
Serum and urine: | |||||||||
S-CC16 (μg/l) | 7.4 (2.0–12) | 5.9 (2.2–9.5) | 6.5 (2.2–10.3) | 7.1 (3.7–14.5) | 6.8 (4.2–13.4) | 5.7 (2.7–10.3) | 5.8 (2.9–11.2) | 8.1*** (3.8–13.1) | |
U-CC16 (μg/h) | 0.02 (0.00–1.3) | 0.08 (0.01–3.4) | 0.03 (0.00–2.0) | 0.01 (0.00–1.2) | 0.07 (0.00–1.6) | 0.05 (0.00–2.5) |
For timing of samples see table 1 (sample 4 = next morning).
S, serum; U, urine.
*Significant increase at the 0.05 level, **at the 0.01 level, and ***at the 0.005 level compared with results after filtered air.
†Concentrations below detection limit (DL) imputed by DL/sqrt(2).