title: [The serum concentration of metalloproteinase 9 and 2 in non-small cell lung cancer patients].
abstract: Matrix metalloproteinases are responsible for the proteolytic degradation of the basement membrane and extracellular matrix. Elevated expression levels of MMP-9 and MMP-2 have been associated with tumor invasion and metastasis.
  
  
  OBJECTIVE
  To determine serum concentrations of metalloproteinases 9 and 2 in non-small cell lung cancer patients depending on tumor stage.
  
  
  METHODS
  The study group consisted of 50 patients with non-small cell lung cancer (16 females and 34 males) ranging in age from 47 - 80 years (mean age 63 +/- 8.2). MMP-9 and MMP-2 concentrations in serum were evaluated by ELISA.
  
  
  RESULTS
  MMP-9 and MMP-2 concentrations in serum did not differ significantly between group with different T- and N-factor. Serum level of MMP-9 was significantly higher in patients with metastases than those without them. Patients with inoperable tumor (IIIB - IV) had significantly higher serum MMP-9 concentrations compared with resected tumor (I - IlIA).
  
  
  CONCLUSIONS
  Serum MMP-9 may be a marker of metastasis in non-small cell lung cancer.
authors.affiliation: Uniwersytet Mikołaja Kopernika w Toruniu, Collegium Medicum w Bydgoszczy, Katedra i Zakład Patobiochemii i Chemii Klinicznej. kopczynska@cm.umk.pl
authors.forename: Ewa
authors.initials: E
authors.lastname: Kopczyńska
authors.forename: Maciej
authors.initials: M
authors.lastname: Dancewicz
authors.forename: Janusz
authors.initials: J
authors.lastname: Kowalewski
authors.forename: Hanna
authors.initials: H
authors.lastname: Kardymowicz
authors.forename: Tomasz
authors.initials: T
authors.lastname: Tyrakowski
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000097:blood*; D002289:Carcinoma, Non-Small-Cell Lung / Q000097:blood* / Q000473:pathology; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood* / Q000473:pathology; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000097:blood*; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D008875:Middle Aged; D009367:Neoplasm Staging
chemical_list: D014408:Biomarkers, Tumor; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9