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Investigation of the Bcl-2 and C-myc expression in relationship to the Ki-67 labelling index in cervical intraepithelial neoplasia

Dellas, A. and Schultheiss, E. and Holzgreve, W. and Oberholzer, M. and Torhorst, J. and Gudat, F.. (1997) Investigation of the Bcl-2 and C-myc expression in relationship to the Ki-67 labelling index in cervical intraepithelial neoplasia. International journal of gynecological pathology, Vol. 16, H. 3. pp. 212-218.

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Official URL: http://edoc.unibas.ch/dok/A5249153

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Abstract

This is the investigation of the relationship between the neoplastic cell proliferation and the expression of bcl-2 and c-myc in human papillomavirus (HPV)-negative and HPV-positive cervical intraepithelial neoplasms (CIN). The expression of bcl-2 and c-myc was studied using quantitative immunohistochemistry in 20 specimens of normal cervical squamous epithelium and 73 specimens of CIN. To analyze the neoplastic cell proliferation rate, the Ki-67 labelling index was determined; the latter was significantly different between normal epithelium and various grades of CIN (p > 0.0001). The highest proliferation rate was found in high-grade CIN. In precancerous lesions, we found the number of bcl-2 positive cells lower than in normal epithelium, but with a significant difference between low-grade and high-grade CIN (p > 0.0001). The highest percentage of bcl-2 positive neoplastic cells was found in high-grade CIN. C-myc was rarely expressed in normal epithelium. Similar to the Ki-67 labelling index, c-myc immunostaining correlated with the histological grade of CIN, with the highest percentage of c-myc positive nuclei occurring in high-grade CIN (p > 0.0001). In contrast to bcl-2 immunoreactivity, the c-myc significantly was more expressed in high-risk HPV-positive than in HPV-negative lesions. The c-myc expression in CIN is closely related to the neoplastic cell proliferation rate. With progression of intraepithelial neoplasia, bcl-2 production in neoplastic cells increases with high co-expression of c-myc.
Faculties and Departments:03 Faculty of Medicine > Bereich Spezialfächer (Klinik) > Gynäkologie und Geburtshilfe
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Spezialfächer (Klinik) > Gynäkologie und Geburtshilfe
03 Faculty of Medicine
UniBasel Contributors:Dellas, Athanassios
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Lippincott Williams & Wilkins
ISSN:0277-1691
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:23
Deposited On:22 Mar 2012 13:36

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