title: Concentration of matrix metalloproteinase-9 in serum of patients with chronic obstructive pulmonary disease and a degree of airway obstruction and disease progression.
abstract: Chronic obstructive pulmonary disease (COPD) is chronic inflammation leading to irreversible airway obstruction. Previous studies showed increased metalloproteinases (MMP) level, especially MMP-9, as a sign of local inflammation. Up-to-date, only a few studies estimated the MMP-9 serum concentration in COPD with respect to correlation with systemic inflammation. The aim of the present study was to estimate the MMP-9 serum concentration in COPD and to evaluate the correlation between MMP-9 and a degree of airway obstruction in COPD. Twenty three COPD patients and 23 healthy controls were enrolled. In both groups spirometry was performed. MMP-9 concentration in sera taken from both groups was studied using ELISA. We found that COPD patients had increased serum MMP-9 concentration compared with the control group (P=0.0005). In the COPD group, the MMP-9 levels were negatively correlated with FEV1 (P=0.01) and FEV1/FVC (P=0.0002). In conclusion, the results suggest that MMP-9 plays an important role in systemic inflammation in COPD. Higher MMP-9 serum concentration is connected with higher airway obstruction and disease progression.
authors.affiliation: Department of Pulmonary Diseases, Poznan University of Medical Sciences, Poznan, Poland. bebap@wp.pl
authors.forename: B
authors.initials: B
authors.lastname: Brajer
authors.forename: H
authors.initials: H
authors.lastname: Batura-Gabryel
authors.forename: A
authors.initials: A
authors.lastname: Nowicka
authors.forename: B
authors.initials: B
authors.lastname: Kuznar-Kaminska
authors.forename: A
authors.initials: A
authors.lastname: Szczepanik
mesh_terms: D000402:Airway Obstruction / Q000503:physiopathology*; D015415:Biomarkers; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood / Q000201:enzymology* / Q000503:physiopathology*; D012129:Respiratory Function Tests; D012907:Smoking / Q000097:blood; D014797:Vital Capacity / Q000502:physiology
chemical_list: D015415:Biomarkers; D020780:Matrix Metalloproteinase 9