Apoptosis in normal epithelium, premalignant and malignant lesions of the oropharynx and oral cavity: a preliminary study

M. A. Birchall, C. M. Winterford, D. J. Allan, B. V. Harmon

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

To explore the involvement of apoptosis in the development of oral and oropharyngeal squamous cell carcinoma (SCC) in vivo, biopsies were taken from patients with macroscopically normal (n = 6), leukoplakic (n= 12) or malignant (n = 8) mucosa. Leukoplakic lesions were divided histologically into dysplasia (n=5) or carcinoma in situ (CIS: n=7). Material was prepared for light and electron microscopy. The apoptotic index (AI), vertical cell position of apoptoses (cp), mitotic index (MI) and AI:MI ratio were calculated for each patient. AI increased from 0.12% ± 0.07 S.E.M. (normal) to 0.58 ± 0.13 (CIS) but fell to 0.14 ± 0.14 in SCC. Apoptoses were suprabasal in normals, but generalised in CIS. MI increased from normal (0.20 ± 0.06) to SCC (0.32 ± 0.09), and AI:MI was at its maximum in CIS (1.57; SCC: 0.44). The results suggest that a change in apoptosis accompanies the onset of invasion in a premalignant lesion of the human oral cavity and oropharynx.

Original languageEnglish (US)
Pages (from-to)380-383
Number of pages4
JournalEuropean Journal of Cancer. Part B: Oral Oncology
Volume31
Issue number6
DOIs
StatePublished - 1995
Externally publishedYes

Fingerprint

Oropharynx
Mitotic Index
Mouth
Squamous Cell Carcinoma
Epithelium
Apoptosis
Leukoplakia
Carcinoma in Situ
Electron Microscopy
Mucous Membrane
Biopsy
Light

Keywords

  • apoptosis
  • carcinoma in situ
  • human
  • normal epithelium
  • oral cavity
  • oropharynx
  • squamous cell carcinoma

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Apoptosis in normal epithelium, premalignant and malignant lesions of the oropharynx and oral cavity : a preliminary study. / Birchall, M. A.; Winterford, C. M.; Allan, D. J.; Harmon, B. V.

In: European Journal of Cancer. Part B: Oral Oncology, Vol. 31, No. 6, 1995, p. 380-383.

Research output: Contribution to journalArticle

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