Figure 5. PneumotypeSPT is associated with a blunted TLR4 response of alveolar macrophages.
Alveolar macrophages of subjects with pneumotypeSPT or pneumotypeBPT were cultured for 24 h and exposed to 10 ng LPS or media alone. Cytokine production was compared for LPS/MA to calculate fold induction. Average UniFrac distances between pairs of BAL samples and upper airways correlated to fold induction of MDC, IL-6 and GM-CSF. Red symbols represent BAL samples identified as pneumotypeSPT and green symbols represent BAL samples identified as pneumotypeBPT (lines represent median and SE, P value based on Spearman’s ρ).