open access

Vol 44, No 2 (2006)
Original paper
Submitted: 2011-12-19
Published online: 2006-06-30
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Stromal myofibroblasts in breast cancer: relations between their occurrence, tumor grade and expression of some tumour markers.

Paweł Surowiak, Sławomir Suchocki, Balazs GyĂśrffy, Tserenchunt Gansukh, Andrzej Wojnar, Adam Maciejczyk, Marek Pudełko, Maciej Zabel
Folia Histochem Cytobiol 2006;44(2):111-116.

open access

Vol 44, No 2 (2006)
ORIGINAL PAPERS
Submitted: 2011-12-19
Published online: 2006-06-30

Abstract

It is suggested that tumour stromal myofibroblasts exert an unfavourable effect on the biology of breast cancer. We are aware of only a single study which examined relationships between manifestation of myofibroblasts in the stroma of breast cancer and clinicopathological data of the patients. The present study was aimed at estimation of the effect exerted by myofibroblasts present in the tumour stroma on principal pathological parameters and on expression of Ki67, P53 and HER-2 proteins in the group of the most frequent breast cancers, the ductal cancers. In paraffin sections of 60 ductal breast cancers (20 cases in G1, 20 in G2 and 20 in G3), immunohistochemical reactions were performed to detect expression of smooth muscle actin (SMA) in order to visualize myofibroblasts, Ki67, P53 and HER-2. The studies demonstrated that the most numerous myofibroblasts were present in G3 cases and they were the least frequent in G1 cases (P = 0.02). Positive correlations were observed between the presence of myofibroblasts in tumour stroma and expression of Ki67 and HER-2 in breast cancer cells in the entire group (P < 0.001 and P = 0.001, respectively), in G2 cases (P = 0.003 and P = 0.03) and in G3 cases (P = 0.01 and P = 0.03). Considering that the higher grade, Ki67 and HER-2 are thought to represent unfavourable prognostic factors, the elevated content of myofibroblasts in tumour stroma is probably typical for cases with worse prognosis.

Abstract

It is suggested that tumour stromal myofibroblasts exert an unfavourable effect on the biology of breast cancer. We are aware of only a single study which examined relationships between manifestation of myofibroblasts in the stroma of breast cancer and clinicopathological data of the patients. The present study was aimed at estimation of the effect exerted by myofibroblasts present in the tumour stroma on principal pathological parameters and on expression of Ki67, P53 and HER-2 proteins in the group of the most frequent breast cancers, the ductal cancers. In paraffin sections of 60 ductal breast cancers (20 cases in G1, 20 in G2 and 20 in G3), immunohistochemical reactions were performed to detect expression of smooth muscle actin (SMA) in order to visualize myofibroblasts, Ki67, P53 and HER-2. The studies demonstrated that the most numerous myofibroblasts were present in G3 cases and they were the least frequent in G1 cases (P = 0.02). Positive correlations were observed between the presence of myofibroblasts in tumour stroma and expression of Ki67 and HER-2 in breast cancer cells in the entire group (P < 0.001 and P = 0.001, respectively), in G2 cases (P = 0.003 and P = 0.03) and in G3 cases (P = 0.01 and P = 0.03). Considering that the higher grade, Ki67 and HER-2 are thought to represent unfavourable prognostic factors, the elevated content of myofibroblasts in tumour stroma is probably typical for cases with worse prognosis.
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About this article
Title

Stromal myofibroblasts in breast cancer: relations between their occurrence, tumor grade and expression of some tumour markers.

Journal

Folia Histochemica et Cytobiologica

Issue

Vol 44, No 2 (2006)

Article type

Original paper

Pages

111-116

Published online

2006-06-30

Bibliographic record

Folia Histochem Cytobiol 2006;44(2):111-116.

Authors

Paweł Surowiak
Sławomir Suchocki
Balazs GyĂśrffy
Tserenchunt Gansukh
Andrzej Wojnar
Adam Maciejczyk
Marek Pudełko
Maciej Zabel

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