Home > Journals > Minerva Stomatologica > Past Issues > Minerva Stomatologica 1999 September;48(9) > Minerva Stomatologica 1999 September;48(9):419-28

CURRENT ISSUE
 

ARTICLE TOOLS

Reprints

MINERVA STOMATOLOGICA

A Journal on Dentistry and Maxillofacial Surgery


Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
Indexed/Abstracted in: CAB, EMBASE, Index to Dental Literature, PubMed/MEDLINE, Scopus, Emerging Sources Citation Index


eTOC

 

THERAPEUTICAL NOTES  


Minerva Stomatologica 1999 September;48(9):419-28

Copyright © 1999 EDIZIONI MINERVA MEDICA

language: Italian

Bcl-2, p53, Ki-67 and aptoptic index preneoplastic and neoplastic lesions of the oral mucosa

Tetè S., Pappalardo S., Fioroni M., Salini L., Imperatrice A. M., Perfetti G.


PDF  


Background. In this study an immunohistochemical analysis of both normal and pathological tissues was made to investigate the expression of some factors involved in genic regulation mechanisms of apoptosis.
Methods. In normal mucosa, in leukoplakia, in mild and severe dysplasia and in high, mild and low grade cancer a bcl-2, p53, and Ki 67 evaluation was made using immunostaining techniques; also an evaluation of apoptotic index was carrried out. Seventy-two biopsies were made in 12 patients with normal mucosa, 12 affected by leukoplakia, 12 by dysplasia (6 mild, 6 severe), 12 by low grade, 12 by mild grade and 12 by high grade cancer. > t
Results. The immunohistochemical analysis pointed out that there was weak bcl-2 expression in normal mucosa and in preneoplastic lesions and less more in severe dysplasia while bcl-2 was discreetly detectable in oral tumors. P53 was not detectable in normal mucosa and weakly expressed in preneoplastic lesions, presenting a peak in severe dysplasia. These results showed an interesting inverse relation between bcl-2 and p53 expression in severe dysplasia. Ki 67 expression results to be weak in normal mucosa, in preneoplastic lesions and in mild dysplasia, while it reaches the maximum level in severe dysplasia and in tumors.
Conclusions. In all the samples the apoptotic index expression showed the same features of the Ki 67 protein. These results were achieved through statistically analysis carried out with the U Mann Whitney test.

top of page

Publication History

Cite this article as

Corresponding author e-mail