CXCL8 and chronic obstructive pulmonary disease: Thus, the maximal % inhibition of fluticasone propionate was 99.01 ± 2.26, 66.57 ± 7.45 and 50.77 ± 5.43 for IL-8 release in healthy, COPD and asthma neutrophils respectively, and 90.85 ± 7.66, 62.09 ± 3.79 and 42.72 ± 6.25 for MMP9 in healthy, COPD and asthma neutrophils respectively (Fig. 1C,D, Supplementary File 1: Table S3).