title: Prognostic value of cathepsins B, D and steffins A and B in laryngeal carcinoma.
abstract: Concentrations of cathepsins A, D and stefins A and B were measured in primary tumor and adjacent normal tissue of 25 patients with laryngeal carcinoma. Median concentrations of both cathepsins and that of stefin B were significantly higher in tumor tissue than in their normal counterparts (cathepsins B and D, P < 0.0001; stefin B, P = 0.01), indicating their possible involvement in the process of tumor spread. Early (T1 and T2) tumors had lower concentrations of stefins A and B than locally advanced (T3 and T4) tumors (P = 0.04). Disease-free and disease-specific survival rates at 45 months were significantly better in patients with tumor concentrations of stefins above or equal to the cut-off values (stefin A, P = 0.001 and P = 0.004; stefin B, P = 0.048 and P = 0.008), indicating that these might be of prognostic value. The concentrations of cathepsins B and D did not correlate with survival.
authors.affiliation: University Department of Otorhinolaryngology and Cervicofacial Surgery, Ljubljana, Slovenia.
authors.forename: L
authors.initials: L
authors.lastname: Smid
authors.forename: P
authors.initials: P
authors.lastname: Strojan
authors.forename: M
authors.initials: M
authors.lastname: Budihna
authors.forename: J
authors.initials: J
authors.lastname: Skrk
authors.forename: I
authors.initials: I
authors.lastname: Vrhovec
authors.forename: M
authors.initials: M
authors.lastname: Zargi
authors.forename: J
authors.initials: J
authors.lastname: Kos
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D002294:Carcinoma, Squamous Cell / Q000201:enzymology* / Q000473:pathology; D002401:Cathepsin B / Q000032:analysis*; D002402:Cathepsin D / Q000032:analysis*; D055312:Cystatin A; D055313:Cystatin B; D015891:Cystatins / Q000032:analysis*; D015853:Cysteine Proteinase Inhibitors / Q000032:analysis*; D018572:Disease-Free Survival; D006801:Humans; D007822:Laryngeal Neoplasms / Q000201:enzymology* / Q000473:pathology; D007830:Larynx / Q000201:enzymology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000201:enzymology / Q000473:pathology; D009367:Neoplasm Staging; D011379:Prognosis; D015996:Survival Rate
chemical_list: D014408:Biomarkers, Tumor; C524994:CSTB protein, human; D055312:Cystatin A; D015891:Cystatins; D015853:Cysteine Proteinase Inhibitors; C026407:CSTA protein, human; D055313:Cystatin B; D002401:Cathepsin B; D002402:Cathepsin D