HEALTH NEWS
Study Title:
The male mammary gland: a target for the xenoestrogen bisphenol A.
Study Abstract
Males of some strains of mice retain their mammary epithelium even in the absence of nipples. Here, we have characterized the mammary gland in male CD-1 mice both in whole mounts and histological sections. We also examined the effects of bisphenol A (BPA), an estrogen mimic that alters development of the female mouse mammary gland. BPA was administered at a range of environmentally relevant doses (0.25-250μg/kg/day) to pregnant and lactating mice and then the mammary glands of male offspring were examined at several periods in adulthood. We observed age- and dose-specific effects on mammary gland morphology, indicating that perinatal BPA exposures alter the male mammary gland in adulthood. These results may provide insight into gynecomastia, the most common male breast disease in humans, where proliferation of the mammary epithelium leads to breast enlargement.
Study Information
Reprod Toxicol. 2013 Jun;37:15-23. doi: 10.1016/j.reprotox.2013.01.002. Epub 2013 Jan 21Full Study
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