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Relationship Between PIK3CA Amplification and P110α and CD34 Tissue Expression as Angiogenesis Markers in Iranian Women with Sporadic Breast Cancer.
Hosseini, Shadi; Behjati, Farkhondeh; Rahimi, Maryam; Taheri, Nazanin; Khoram Khorshid, Hamidreza; Aghakhani Moghaddam, Fatemeh; Ghasemi, Saghar; Karimlou, Masoud; Sirati, Fereidoon; Keyhani, Elahe.
Afiliação
  • Hosseini S; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Behjati F; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Rahimi M; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Taheri N; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Khoram Khorshid H; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Aghakhani Moghaddam F; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Ghasemi S; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
  • Karimlou M; Dept. of Epidemiology and Biostatistics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
  • Sirati F; Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran.
  • Keyhani E; Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Iran J Pathol ; 13(4): 447-453, 2018.
Article em En | MEDLINE | ID: mdl-30774684
ABSTRACT
BACKGROUND AND

OBJECTIVE:

The PI3K/AKT/mTOR pathway is known to play an important role in regulating angiogenesis both in normal and breast cancer (BC) tissues. PIK3CA amplification was reported in various malignancies, including approximately 10% of BC cases. The aim of this study was to identify the frequency of PIK3CA amplification in Iranian female patients suffering from BC. Additionally, possible association between PIK3CA amplification and P110α expression with microvascular density (MVD) was examined.

METHODS:

DNA samples were extracted from paraffin embedded tumor tissue blocks and copy number changes were evaluated by MLPA Technique. The results were analyzed by coffalyzer software. The tissue expression of P110α and CD34 was assessed using immunohistochemistry.

RESULTS:

Ten out of 40 samples (17.5%) showed amplification in PIK3CA gene and 22 out of 40 samples (55%) showed overexpression in P110α. For CD34, from 40 samples, 20 (50%), 15 (37.5%) and 5 (12.5%) had scores 1+, 2+ and 3+, respectively.

CONCLUSION:

No significant association was detected between gain of PIK3CA copy number and P110α or CD34 tissue expression.
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Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2018 Tipo de documento: Article