Cellularity and oestrogen receptor content in breast cancer microsamples.
نویسندگان
چکیده
منابع مشابه
Breast carcinoma cellularity and its relation to oestrogen receptor content.
The cellularity of 104 primary breast carcinomata was determined by semiautomated image analysis to allow the relation between cellularity and oestrogen receptor content values to be assessed. The oestrogen receptor content of tumours detected by a steroid binding assay showed no correlation with cellularity, although a possible weak negative correlation was observed between tumour cellularity ...
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Most breast cancers are driven by a transcription factor called oestrogen receptor (ER). Understanding the mechanisms of ER activity in breast cancer has been a major research interest and recent genomic advances have revealed extraordinary insights into how ER mediates gene transcription and what occurs during endocrine resistance. This review discusses our current understanding on ER activity...
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AIM To evaluate the effect of the duration of formalin fixation and of tumour heterogeneity on quantitative estimates of oestrogen receptor content (oestrogen receptor index) and proliferative activity (MIB-1 index) in breast cancer. METHODS Two monoclonal antibodies, MIB-1 and oestrogen receptor, were applied to formalin fixed, paraffin wax embedded tissue from 25 prospectively collected oes...
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Endocrine resistance, which occurs either by de novo or acquired route, is posing a major challenge in treating hormone-dependent breast cancers by endocrine therapies. The loss of oestrogen receptor α (ERα) expression is the vital cause of establishing endocrine resistance in this subtype. Understanding the mechanisms that determine the causes of this phenomenon are therefore essential to redu...
متن کاملOestrogen receptor: a stable phenotype in breast cancer.
Oestrogen receptor (ER) expression in breast cancer is regarded as a phenotype that may change during the natural history of the disease or during endocrine therapy. It has been suggested that in up to 70% of tumours that show acquired resistance the mechanism may be changed in ER status from positive to negative. This paper proposes an alternative hypothesis that ER expression in a stable phen...
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ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1990
ISSN: 0021-9746
DOI: 10.1136/jcp.43.8.698