All cases of prostate cancer exhibit the hallmark condition of marked decrease in zinc in malignancy compared to the high zinc levels in the normal and benign prostate. There exists no reported corroborated case of prostate cancer in which malignancy exhibits the high zinc levels that exist in the normal prostate acinar epithelium. The decrease in zinc is achieved by the downregulation of ZIP1 zinc transporter, which prevents the uptake and accumulation of cytotoxic zinc levels. Thus, prostate cancer is a "ZIP1-deficient" malignancy. Testosterone and prolactin are the major hormones that similarly regulate the growth, proliferation, metabolism, and functional activities of the acinar epithelial cells in the peripheral zone (the site of development and progression of malignancy). Testosterone regulation provides the basis for androgen ablation treatment of advanced prostate cancer, which leads to the development of terminal androgen-independent malignancy. Androgen-independent malignancy progresses under the influence of prolactin. These relationships provide the basis for the prevention and treatment of advanced prostate cancer. Clioquinol (zinc ionophore; 5-chloro-7-iodoquinolin-8-ol) is employed to facilitate zinc transport and accumulation in the ZIP1-deficient malignant cells and induce cytotoxic effects. Cabergoline (dopamine agonist) is employed to decrease prolactin production and its role in the progression of androgen-independent malignancy. We propose a clioquinol/cabergoline treatment regimen that will be efficacious for aborting terminal advanced prostate cancer. FDA policies permit this treatment regimen to be employed for these patients.
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