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Table 1 Demographic data of the study population. Data are given as mean ± SD. AM = alveolar macrophages, Ly = lymphocytes, PMN = polymorphonuclear neutrophils.

From: Toll-like receptor 2 expression is decreased on alveolar macrophages in cigarette smokers and COPD patients

  COPD (n = 14) Smoker (n = 10) Non-smoker
    old (n = 7) Young (n = 10)
Age 64.4 ± 9.2 30 ± 4.5 57.8 ± 6 26.8 ± 2.1
GOLD stage II (n = 9)
III (n = 5)
   
Pack years 43.6 ± 13.8# 16.2 ± 5.2 0 0
Cell concentration BAL × 106/100 ml 22.5 ± 10.8* 29.4 ± 19.0 13.0 ± 3.4 10.7 ± 5.1
Diff. Count BAL × 106/100 ml AM 20.1 ± 9.7* 27.7 ± 18.2 11.1 ± 3.3 9.4 ± 4.8
Ly 1.2 ± 0.41 0.92 ± 0.31 1.6 ± 2.1 0.9 ± 0.29
PMN 0.95 ± 0.5+ 0.66 ± 0.2 0.21 ± 0.23 0.21 ± 0.1
Gram stain smear negative negative negative Negative
  1. #= p < 0.01 vs. smokers, * = p < 0.01 vs. non-smokers, + = p < 0.01 vs. smokers and non-smokers.