期刊
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
卷 39, 期 1, 页码 405-416出版社
ELSEVIER
DOI: 10.1016/j.etap.2014.09.014
关键词
Bisphenol A; iNOS; StAR; Oxidative stress; Sperm count; Serum testosterone
资金
- Department of Science and Technology (DST), New Delhi
- Council of Scientific and Industrial Research (CSIR), New Delhi
- Indian Council of Medical Research, New Delhi
- DST New Delhi, India [100/(IFD)/1130/2012-2013 SR/CSI/38/2011(G) DST P-07-520]
Bisphenol A (BPA) is a well-known plasticizer and xenoestrogen that is responsible for many acquired reproductive difficulties, especially in men. Despite the prevalence of BPA in society, the mechanism behind reproductive deficits remains elusive. The present study investigates the mode of BPA's action by evaluating its effect on the expression of inducible nitric oxide synthase (iNOS) and steriodogenic acute regulatoxyprotein (StAR) in male mice testis. Swiss albino mice were treated with a range BPA concentrations of 0.5, 50 and 100 mu g/kg body weight/day intraperitoneally for 60 days. Several markers of oxidative stress and male fertility were investigated. Nitrite levels, malondialdehyde levels and testicular injury scores were elevated whereas the sperm count, serum testosterone levels and catalase activity were reduced in the BPA groups. Mechanistically, an increase in iNOS expression was observed in the testis whereas the expression of the StAR was down regulated in the BPA treated mouse. These results suggest that BPA induces oxidative stress by altering the expression of iNOS, which consequently leads to the down regulation of StAR expression in the testis of male mouse. (C) 2014 Elsevier B.V. All rights reserved.
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