CHRNA7 and acute respiratory distress syndrome: The LPS‐induced inflammatory markers of ALI show significantly higher levels in cholinergic‐deficient than wild‐type mice, while selective α7nAChR agonist PNU282987 can decrease neutrophil accumulation, IL‐1β and chemokine (C‐X‐C motif) ligand‐1 levels in the lung of ALI mice.98