Selenium, estradiol 17 beta, nitrites, and human breast cancer

Area of Science:

• Oncology
• Biochemistry
• Epidemiology

Background:

• Breast cancer is a leading cancer in women, with existing research often oversimplifying the roles of selenium, estrogens, and nitrites.
• Current studies frequently examine these factors individually, neglecting their dynamic interactions in carcinogenesis.

Purpose of the Study:

• To investigate the combined epidemiologic and etiologic effects of selenium, estrogens, and nitrites on human breast cancer.
• To propose a novel hypothesis detailing the interaction of these factors, particularly concerning erythrocytes, within a multistage carcinogenesis framework.
• To elucidate a biochemical pathway for breast cell carcinogenesis, including the role of a postulated enzyme, estradiase.

Main Methods:

• Literature review and synthesis of existing research on selenium, estrogens, nitrites, and breast cancer.
• Development of a theoretical model for multistage carcinogenesis incorporating the interaction of key factors.
• Postulation of a biochemical process and diagrammatic representation of erythrocyte involvement.

Main Results:

• A hypothesis is presented for the interaction of selenium, estrogens, and nitrites in breast cancer etiology.
• A potential role for erythrocytes in breast cancer development is highlighted.
• A novel enzyme, estradiase, is postulated to facilitate the conversion of estradiol 17 to a carcinogen.

Conclusions:

• The study suggests a more complex, multifactorial model for breast cancer development than previously considered.
• Understanding the interaction of selenium, estrogens, nitrites, and erythrocyte function is crucial for advancing breast cancer research.
• The postulated enzyme estradiase warrants further investigation for its role in breast cancer pathogenesis.