Cigarette Smoke-Induced Collagen Destruction; Key to Chronic Neutrophilic Airway Inflammation?
Figure 6
N-ac-PGP induces the release of CXCL8, MMP8 and MMP9 from human PMNs.
105 freshly isolated buffy coat PMNs were stimulated for 9 hours with N-ac-PGP (10−4–3·10−3 M) or LPS (100 ng/ml). CXCL8, MMP8 and MMP9 ELISA's were performed on the supernatants. (A) N-ac-PGP induced the release of CXCL8 from fresh cells (*** p<0.001 repeated measures ANOVA+Tukey N-ac-PGP vs. control; ∧ p<0.05 paired t-test LPS vs. control). (B, C) N-ac-PGP induced the release of MMP8 from fresh cells (* p<0.05 paired t-test CSE OD 0.12 vs. control; ∧∧ p<0.01 paired t-test LPS vs. control). (C) N-ac-PGP induced the release of MMP9 from fresh cells (** p<0.01 repeated measures ANOVA+Tukey N-ac-PGP vs. control; ∧ p<0.01 paired t-test LPS vs. control). Legend: each symbol represents a different donor (n = 4–5). Individual data are shown, horizontal bars represent mean values. The data presented here all passed the normality test.