The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features
Background: Aldehyde dehydrogenase 1 (ALDH1) is a marker of normal and malignant human mammary stem cells that has been reported to be associated with poor prognosis. Studies on the detection of ALDH1+ cells can help the treatment of patients with breast cancer. The aim of this study was to determin...
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| Format: | Article |
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Tehran University of Medical Sciences
2011-12-01
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| Series: | Tehran University Medical Journal |
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| Online Access: | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/19558.pdf&manuscript_id=19558 |
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| author | Molanae S Kadivar M Madjd Z Ramezani B |
| author_facet | Molanae S Kadivar M Madjd Z Ramezani B |
| author_sort | Molanae S |
| collection | DOAJ |
| description | Background: Aldehyde dehydrogenase 1 (ALDH1) is a marker of normal and malignant human mammary stem cells that has been reported to be associated with poor prognosis. Studies on the detection of ALDH1+ cells can help the treatment of patients with breast cancer. The aim of this study was to determine the activity of ALDH1 in breast cancer and its relationship with the pathological features of the tumors.Methods: ALDH1 activity was studied by immunohistochemistry in 121 paraffin-embedded histological samples of breast cancer patients from Department of Pathology of Milad Hospital, Tehran, Iran during 2006-2007. The relationship of ALDH1 with the pathological features of the tumors (size, grade, lymph node metastasis and vascular invasion) was also investigated.Results: Eighty-five percent of breast cancer samples expressed ALDH1 in their cytoplasm with a wide range of intensity (weak, moderate and strong), while 18 samples (14.9%) were completely negative. The majority of cases (97.1%) showed ALDH1 positivity in the stroma of tumors which varied from weak (2.9%) to strong (73.5%). ALDH1 H-score (ALDH1% × intensity) of tumor cells varied from 0 to 240 (mean= 80). ALDH1 H-score was ≤80 in 62 (51.2%) and >80 in 59 (48.8%) samples. There was no statistically significant relationship between ALDH1 H-score and age (P=0.358), tumor size (P=0.375), tumor grade (P=0.207), lymph node metastasis (P=0.125) or vascular invasion (P=0.190).Conclusion: ALDH1 activity was demonstrated in 85.1% of breast cancer samples although its level of expression was not correlated with the pathologic features of breast tumors. |
| first_indexed | 2024-12-10T12:47:39Z |
| format | Article |
| id | doaj.art-1a3dbb0a9bb14b6bb0f4e790f421b3aa |
| institution | Directory Open Access Journal |
| issn | 1683-1764 1735-7322 |
| language | fas |
| last_indexed | 2024-12-10T12:47:39Z |
| publishDate | 2011-12-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Tehran University Medical Journal |
| spelling | doaj.art-1a3dbb0a9bb14b6bb0f4e790f421b3aa2022-12-22T01:48:21ZfasTehran University of Medical SciencesTehran University Medical Journal1683-17641735-73222011-12-01699529536The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic FeaturesMolanae SKadivar MMadjd ZRamezani BBackground: Aldehyde dehydrogenase 1 (ALDH1) is a marker of normal and malignant human mammary stem cells that has been reported to be associated with poor prognosis. Studies on the detection of ALDH1+ cells can help the treatment of patients with breast cancer. The aim of this study was to determine the activity of ALDH1 in breast cancer and its relationship with the pathological features of the tumors.Methods: ALDH1 activity was studied by immunohistochemistry in 121 paraffin-embedded histological samples of breast cancer patients from Department of Pathology of Milad Hospital, Tehran, Iran during 2006-2007. The relationship of ALDH1 with the pathological features of the tumors (size, grade, lymph node metastasis and vascular invasion) was also investigated.Results: Eighty-five percent of breast cancer samples expressed ALDH1 in their cytoplasm with a wide range of intensity (weak, moderate and strong), while 18 samples (14.9%) were completely negative. The majority of cases (97.1%) showed ALDH1 positivity in the stroma of tumors which varied from weak (2.9%) to strong (73.5%). ALDH1 H-score (ALDH1% × intensity) of tumor cells varied from 0 to 240 (mean= 80). ALDH1 H-score was ≤80 in 62 (51.2%) and >80 in 59 (48.8%) samples. There was no statistically significant relationship between ALDH1 H-score and age (P=0.358), tumor size (P=0.375), tumor grade (P=0.207), lymph node metastasis (P=0.125) or vascular invasion (P=0.190).Conclusion: ALDH1 activity was demonstrated in 85.1% of breast cancer samples although its level of expression was not correlated with the pathologic features of breast tumors.http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/19558.pdf&manuscript_id=19558ALDH1Breast CancerCancer Stem Cells |
| spellingShingle | Molanae S Kadivar M Madjd Z Ramezani B The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features Tehran University Medical Journal ALDH1 Breast Cancer Cancer Stem Cells |
| title | The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features |
| title_full | The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features |
| title_fullStr | The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features |
| title_full_unstemmed | The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features |
| title_short | The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features |
| title_sort | immunohistochemical assessment of aldh1 activity in breast cancer and it s correlation with pathologic features |
| topic | ALDH1 Breast Cancer Cancer Stem Cells |
| url | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/19558.pdf&manuscript_id=19558 |
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