title: Prognostic significance of TIMP-1 in non-small cell lung cancer.
abstract: Tissue inhibitor of metalloproteinases 1 (TIMP1) regulates not only extracellular matrix catabolism but the major effect in tumor tissue is promotion of cell growth and anti-apoptotic activity. The aim of our study was to evaluate plasma TIMP1 levels and tissue TIMP1 mRNA expression as prognostic markers in NSCLC patients.
  
  
  METHODS
  We studied a group of 108 patients with NSCLC who had undergone lung surgery. Estimation of TIMP1 mRNA was performed by quantitative polymerase chain reaction (qPCR) and estimation of plasma TIMP1 protein using enzyme-linked immunosorbent assay (ELISA).
  
  
  RESULTS
  There was shorter disease-free interval (DFI) for NSCLC patients at stage II, with a higher expression of TIMP1 mRNA in tumor tissue (p=0.0246). We recorded a relationship between tumor tissue TIMP1 mRNA expression and DFI in squamous cell carcinoma (SCC) (p=0.0117). Shorter overall survival was found in patients at stages IIIa+IIIb+IV, with a higher expression of TIMP1 mRNA (p=0.0389). We found differences in plasma TIMP1 levels between patients with SCC and those with adenocarcinoma (p=0.0491).
  
  
  CONCLUSIONS
  A higher tissue level of TIMP1 mRNA is related to an adverse prognosis of patients. However, our results did not show any relation of TIMP1 protein in blood plasma to prognosis.
authors: Department of Internal Medicine II, Faculty of Medicine in Pilsen, Karlovarska 48, 301 66 Pilsen, Czech Republic. martin.pesta@lfp.cuni.cz
authors: Martin
authors: M
authors: Pesta
authors: Vlastimil
authors: V
authors: Kulda
authors: Radek
authors: R
authors: Kucera
authors: Milos
authors: M
authors: Pesek
authors: Jindra
authors: J
authors: Vrzalova
authors: Vaclav
authors: V
authors: Liska
authors: Ladislav
authors: L
authors: Pecen
authors: Vladislav
authors: V
authors: Treska
authors: Jarmil
authors: J
authors: Safranek
authors: Marketa
authors: M
authors: Prazakova
authors: Ondrej
authors: O
authors: Vycital
authors: Jan
authors: J
authors: Bruha
authors: Lubos
authors: L
authors: Holubec
authors: Ondrej
authors: O
authors: Topolcan
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000235:genetics / Q000401:mortality; D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood / Q000235:genetics; D002289:Carcinoma, Non-Small-Cell Lung / Q000175:diagnosis* / Q000235:genetics / Q000401:mortality; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000235:genetics / Q000401:mortality; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000235:genetics / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015996:Survival Rate; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000097:blood* / Q000235:genetics*
chemical_list: D014408:Biomarkers, Tumor; D012333:RNA, Messenger; C560822:TIMP1 protein, human; D019715:Tissue Inhibitor of Metalloproteinase-1