Abstract
In this study the effects of a Western-style diet on epithelial cell proliferation in the prostate and bladder of C57BL/6J mice were investigated. The Western-style diet contained increased fat and low calcium and vitamin D, compared with AIN-76A control diet, at levels simulating human Western diets based on nutrient density. After feeding the Western-style and AIN-76A diets for 5 and 16 weeks, mice were infused with bromodeoxyuridine (BrdU) for 72 h using s.c. implanted osmotic pumps. Findings revealed that in bladder epithelium BrdU labeling indices were not significantly different (P > 0.05) between mice on the control and Western-style diets at both time periods. However, significant increases in BrdU labeling indices occurred in epithelial cells of the anterior (P = 0.024) and dorsal (P = 0.049) lobes, but not in the ventral lobe (P = 0.21), of the mouse prostate after feeding the Western-style diet for 16 weeks, compared with mice on the control diet. These findings demonstrate Western-style diet induction of epithelial cell hyperproliferation in anterior and dorsal lobes of the mouse prostate. The findings further suggest that these nutrients may have a role in human prostatic carcinogenesis, since the anterior and dors...Continue Reading
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