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Ki-67 and Bcl-2 Antigen Expression in Adenomatous Colorectal Polyps from Women with Breast Cancer

  • Breast Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

The aim of this study was to evaluate Ki-67 and Bcl-2 antigen expression in colorectal polyps from women with breast cancer.

Methods

A randomized, controlled study was carried out in 35 women, either with or without breast cancer, who had adenomatous colorectal polyps. The patients were divided into two groups: group A (without breast cancer; control group; n = 17) and group B (with breast cancer; study group; n = 18). Immunohistochemistry was performed on the colorectal polyps to evaluate Ki-67 and Bcl-2 antigen expression. Student’s t-test and the χ2 test were used for the statistical analysis of Ki-67 and Bcl-2 expression, respectively. Statistical significance was established as P < 0.05.

Results

The mean percentage of Ki-67-stained nuclei in groups A and B was 36.25 ± 2.31 and 59.44 ± 3.34 (± SEM), respectively (P < 0.0001), while the percentage of cases with cells expressing Bcl-2 in groups A and B was 23.5 and 77.8%, respectively (P < 0.001).

Conclusions

In the present study, there was greater proliferative activity and greater expression of the antiapoptotic protein Bcl-2 in the colorectal polyps of women with breast cancer.

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Authors and Affiliations

  1. Department of General Surgery, Hospital Getulio Vargas, Federal University of Piauí, Teresina, Piauí, Brazil

    Edílson Carvalho de Sousa-Júnior MD

  2. Mastology Division, Department of Gynecology, Hospital Getulio Vargas, Federal University of Piauí, Teresina, Piauí, Brazil

    Edílson Carvalho de Sousa-Júnior MD & Benedito Borges da Silva MD, PhD

  3. Department of Statistics, University of São Paulo, São Paulo, Brazil

    Airlane Pereira Alencar PhD

Authors
  1. Edílson Carvalho de Sousa-Júnior MD
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  2. Airlane Pereira Alencar PhD
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  3. Benedito Borges da Silva MD, PhD
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Corresponding author

Correspondence to Benedito Borges da Silva MD, PhD.

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de Sousa-Júnior, E.C., Alencar, A.P. & da Silva, B.B. Ki-67 and Bcl-2 Antigen Expression in Adenomatous Colorectal Polyps from Women with Breast Cancer. Ann Surg Oncol 17, 2378–2383 (2010). https://doi.org/10.1245/s10434-010-0968-5

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  • DOI: https://doi.org/10.1245/s10434-010-0968-5

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