IL17A and chronic obstructive pulmonary disease: We found that IL-17A mRNA expression was not decreased in the asthma group compared to controls in moDCs co-cultivated with epithelium (p = 0.285), but revealed a significantly lower IL-17A mRNA expression in moDCs alone from asthma (p = 0.005) and COPD (p = 0.049) patients compared to controls.