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Abstract Title:

Regulatory and junctional proteins of the blood-testis barrier in human Sertoli cells are modified by monobutyl phthalate (MBP) and bisphenol A (BPA) exposure.

Abstract Source:

Toxicol In Vitro. 2016 Feb 26 ;34:1-7. Epub 2016 Feb 26. PMID: 26922907

Abstract Author(s):

André Teves Aquino Gonçalves de Freitas, Mariana Antunes Ribeiro, Cristiane Figueiredo Pinho, André Rebelo Peixoto, Raquel Fantin Domeniconi, Wellerson R Scarano

Article Affiliation:

André Teves Aquino Gonçalves de Freitas

Abstract:

The blood-testis barrier (BTB) is responsible for providing a protected environment and coordinating the spermatogenesis. Endocrine disruptors (EDs) might lead to infertility, interfering in the BTB structure and modulation. This study aimed to correlate the actions of two EDs, monobutyl phthalate (MBP) and bisphenol A (BPA) in different periods of exposure, in a low toxicity dose to the human Sertoli cells (HSeC) and its effects on the proteins of the BTB and regulatory proteins involved in its modulation. HSeC cells were exposed to MBP (10μM) and BPA (20μM) for 6 and 48h. Western Blot assay indicated that MBP was able to reduce the expression of occludin, ZO-1, N-cadherin and Androgen Receptor (AR), while BPA leads to a reduction of occludin, ZO-1, β-catenin and AR. TGF-β2 and F-actin were not modified. Phalloidin and Hematoxylinand Eosin assay revealed phenotically disruption in Sertoli cells adhesion, without changes in F-actin expression or localization. Our data suggested both EDs present potential for disrupting the structure and maintenance of the human BTB by AR dependent pathway.

Study Type : Human In Vitro

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Sayer Ji
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