Gestational Exposure to Bisphenol A Affects the Function and Proteome Profile of F1 Spermatozoa in Adult Mice
- Authors
- Rahman, Md Saidur; Kwon, Woo-Sung; Karmakar, Polash Chandra; Yoon, Sung-Jae; Ryu, Buom-Yong; Pang, Myung-Geol
- Issue Date
- Feb-2017
- Publisher
- US DEPT HEALTH HUMAN SCIENCES PUBLIC HEALTH SCIENCE
- Citation
- ENVIRONMENTAL HEALTH PERSPECTIVES, v.125, no.2, pp 238 - 245
- Pages
- 8
- Journal Title
- ENVIRONMENTAL HEALTH PERSPECTIVES
- Volume
- 125
- Number
- 2
- Start Page
- 238
- End Page
- 245
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4874
- DOI
- 10.1289/EHP378
- ISSN
- 0091-6765
1552-9924
- Abstract
- BACKGROUND: Maternal exposure to the endocrine disruptor bisphenol A (BPA) has been linked to offspring reproductive abnormalities. However, exactly how BPA affects offspring fertility remains poorly understood. OBJECTIVES: The aim of the present study was to evaluate the effects of gestational BPA exposure on sperm function, fertility, and proteome profile of F1 spermatozoa in adult mice. METHODS: Pregnant CD-1 mice (F0) were gavaged with BPA at three different doses (50 mu g/kg bw/day, 5 mg/kg bw/day, and 50 mg/kg bw/day) on embryonic days 7 to 14. We investigated the function, fertility, and related processes of F1 spermatozoa at postnatal day 120. We also evaluated protein profiles of F1 spermatozoa to monitor their functional affiliation to disease. RESULTS: BPA inhibited sperm count, motility parameters, and intracellular ATP levels in a dose-dependent manner. These effects appeared to be caused by reduced numbers of stage VIII seminiferous epithelial cells in testis and decreased protein kinase A (PKA) activity and tyrosine phosphorylation in spermatozoa. We also found that BPA compromised average litter size. Proteins differentially expressed in spermatozoa from BPA treatment groups are known to play a critical role in ATP generation, oxidative stress response, fertility, and in the pathogenesis of several diseases. CONCLUSIONS: Our study provides mechanistic support for the hypothesis that gestational exposure to BPA alters sperm function and fertility via down-regulation of tyrosine phosphorylation through a PKA-dependent mechanism. In addition, we anticipate that the BPA-induced changes in the sperm proteome might be partly responsible for the observed effects in spermatozoa.
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