Premium
Cell cycle alterations and their relationship to proliferation in apocrine adenosis of the breast
Author(s) -
Elayat Ghada,
Selim AbdelGhani A,
Wells Clive A
Publication year - 2009
Publication title -
histopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.626
H-Index - 124
eISSN - 1365-2559
pISSN - 0309-0167
DOI - 10.1111/j.1365-2559.2009.03223.x
Subject(s) - cyclin d1 , apocrine , immunohistochemistry , cell cycle , cyclin , cancer research , atypia , cyclin b1 , carcinogenesis , breast cancer , cyclin d , cyclin e , cell growth , cyclin b , pathology , biology , cancer , medicine , cyclin dependent kinase 1 , biochemistry
Aims: Apocrine adenosis (AA) is generally considered a benign disease of the breast. However, recent studies have suggested a precancerous potential for some of these lesions. The aim was to investigate the status of cell cycle proteins previously reported to be deregulated in breast cancer to identify their possible role in AA. Methods and results: The cases were categorized into AA without atypia (NAA) and atypical AA (AAA). Using immunohistochemistry, the expression of cyclin D1, cyclin A, p27, p21, p16, pRb and Ki67 was determined in 29 NAA and 16 AAA cases. Cyclin D1, p21 and cyclin A were overexpressed in 58.6%, 51.7% and 31.8% of the NAA cases, respectively, whereas 81.3%, 62.5% and 41.7% of the AAA cases showed overexpression of cyclin D1, p21 and cyclin A, respectively. All cases were negative for p16, whereas pRb was expressed in all cases. Furthermore, proliferation in AA (4.5%) was significantly higher than that of normal breast epithelium (1%). There was no statistical significance in the degree of proliferation between the NAA (3.7%) and AAA (4.8%) groups. Conclusions: The study indicates that NAA and AAA are biologically similar. A subset of AA defined by increased proliferation and significant cell cycle alterations may be susceptible to oncogenesis.