Prognostic significance of proliferative and apoptotic markers in oral tongue squamous cell carcinomas

Oral Oncol. 1999 Sep;35(5):502-9. doi: 10.1016/s1368-8375(99)00024-x.

Abstract

The prognostic impact of proliferative and apoptotic markers was studied in 85 T1-4 oral tongue squamous cell carcinomas (SCCs). Ki67 immunoreactivity and AgNOR counts, including mean AgNOR counts (mAgNOR) and the percentage of nuclei with more than one AgNOR (pAgNOR > 1), were used as proliferative parameters. The apoptotic index (AI) was assessed using the TUNEL method. Bax expression was detected immunohistochemically and scored. Bax expression correlated positively with AI (p = 0.0122). Ki67 correlated with both pAgNOR > 1 (p = 0.0042) and mAgNOR (p = 0.0189). Low Bax expression and low AI correlated significantly with the disease-free period (p = 0.0001 and p = 0.0024, respectively). High values for Ki67, pAgNOR > 1 and mAgNOR correlated with poor prognosis (p = 0.0021, p = 0.0001 and p = 0.0244, respectively). Combinations of proliferative and apoptotic parameters were stronger predictors than individual parameters (p < 0.0001). pAgNOR > 1-Bax expression appeared to be the best combination (p < 0.0001). We conclude that proliferative and apoptotic markers, especially their combinations, have prognostic value in tongue SCC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Apoptosis / physiology*
  • Biomarkers, Tumor / analysis
  • Carcinoma, Squamous Cell / pathology*
  • Carcinoma, Squamous Cell / physiopathology
  • Cell Division
  • Disease-Free Survival
  • Diterpenes / metabolism
  • Female
  • Humans
  • Ki-67 Antigen / analysis*
  • Male
  • Middle Aged
  • Prognosis
  • Proto-Oncogene Proteins / metabolism
  • Proto-Oncogene Proteins c-bcl-2*
  • Staining and Labeling / methods
  • Tongue Neoplasms / pathology*
  • Tongue Neoplasms / physiopathology
  • bcl-2-Associated X Protein

Substances

  • BAX protein, human
  • Biomarkers, Tumor
  • Diterpenes
  • Ki-67 Antigen
  • Proto-Oncogene Proteins
  • Proto-Oncogene Proteins c-bcl-2
  • bcl-2-Associated X Protein
  • argyrophilic acid