Effects of bisphenol A analogues on reproductive functions in mice

This study was performed to examine whether bisphenol (BP) A analogues, BPE and BPS, negatively impacts reproductive functions using mice as a model. CD-1 mice were exposed to control treatment (corn oil), BPA, BPE and BPS (50 μg/kg or 10 mg/kg) from birth to postnatal day (PND) 60 by s.c. injection every three days. Sperm counts or motility was significantly reduced by BPA, BPE or BPS exposure on PND 60 or PND 90. Exposure of BPA, BPE and BPS disrupted the progression of germ cell development, as morphometric analyses exhibited an abnormal distribution of the stages of spermatogenesis. In females, postnatal BPA and BPE exposure accelerated the onset of puberty, and increased body weight after parturition. Furthermore, postnatal exposure of BPA, BPE and/or BPS increased steroid hormone levels in serum. These results suggest that BPA analogues (BPS and BPE) affects male and female reproductive functions.