We found a positive association between productive cough and serum MMP-9 in COPD, indicating increased proteolytic activity in COPD patients with bronchitis, even though this association did not reach statistical significance in the multivariate model.
← all excerpts
Serum metalloproteinase-9 is related to COPD severity and symptoms - cross-sectional data from a population based cohort-study.
1
—
—