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01-09-2014 | Laboratory Investigation

Aromatase and estrogen receptor alpha mRNA expression as prognostic biomarkers in patients with astrocytomas

Authors: J. M. Dueñas Jiménez, A. Candanedo Arellano, A. Santerre, S. Orozco Suárez, H. Sandoval Sánchez, I. Feria Romero, R. López-Elizalde, M. Alonso Venegas, B. Netel, B. de la Torre Valdovinos, S. H. Dueñas Jiménez

Published in: Journal of Neuro-Oncology | Issue 2/2014

Abstract

Estrogens are oncogenic hormones at a high level in breast, prostate, endometrial and lung cancer. Estrogens are synthesized by aromatase which has been used as a biomarker both in breast and lung cancer. Estrogen biological activities are executed by their classic receptors (ERα and ERβ). ERα has been described as a cancer promoter and ERβ, as a possible tumor suppressor. Both receptors are present at low levels in primary multiforme glioblastoma (GBM). The GBM frequency is 50 % higher in men than in women. The GBM patient survival period ranges from 7 to 18 months. The purpose of this pilot study was to evaluate aromatase and estrogen receptor expression, as well as 17ß-estradiol concentration in astrocytoma patients biopsies to obtain a prognosis biomarker for these patients. We analyzed 36 biopsies of astrocytoma patients with a different grade (I–IV) of malignity. Aromatase and estrogen receptor mRNA expression were analyzed by semiquantitative RT-PCR, and the E2 levels, by ELISA. E2 concentration was higher in GBM, compared to grade II or III astrocytomas. The number of cells immunoreactive to aromatase and estrogen receptors decreased as the grade of tumor malignity increased. Aromatase mRNA expression was present in all biopsies, regardless of malignity grade or patient age or gender. The highest expression of aromatase mRNA in GBM patients was associated to the worst survival prognostic (6.28 months). In contrast lowest expression of ERα mRNA in astrocytoma patients had a worst prognosis. In conclusion, aromatase and ERα expression could be used as prognosis biomarkers for astrocytoma patients.

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Title: Aromatase and estrogen receptor alpha mRNA expression as prognostic biomarkers in patients with astrocytomas
Authors: J. M. Dueñas Jiménez
A. Candanedo Arellano
A. Santerre
S. Orozco Suárez
H. Sandoval Sánchez
I. Feria Romero
R. López-Elizalde
M. Alonso Venegas
B. Netel
B. de la Torre Valdovinos
S. H. Dueñas Jiménez
Publication date: 01-09-2014
Publisher: Springer US
Published in: Journal of Neuro-Oncology / Issue 2/2014
Print ISSN: 0167-594X
Electronic ISSN: 1573-7373
DOI: https://doi.org/10.1007/s11060-014-1509-z

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Aromatase and estrogen receptor alpha mRNA expression as prognostic biomarkers in patients with astrocytomas

Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

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