期刊
REPRODUCTIVE TOXICOLOGY
卷 58, 期 -, 页码 203-212出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.reprotox.2015.10.010
关键词
Sertoli cell; MEHP; Adherent junction proteins; Glutathione; Oxidative stress
资金
- Universidad de Buenos Aires (UBA)
- Consejo Nacional de Investigacion Cientifica y Tecnologica (CONICET)
We analyzed the potential role of oxidative stress induced by mono (2-ethylhexyl) phthalate (MEHP) in adherent cell junction protein expression of prepubertal rat Sertoli cells (SC) in vitro. Five-day SC cultures were treated with MEHP (200 mu M) for 24 h and compared to cells in basal conditions. Western blot and immunofluorescent (IF) analyses showed that MEHP induced increase of N-cadherin and catenin expression, modifying its distribution. Concomitantly, Cx-43 expression decreased significantly and delocalization of the IF signal for tight junction proteins (occludin, claudin-11 and ZO-1) occurred. Indicative of oxidative stress, MEHP induced in SC an increase of lipoperoxides, a decrease in glutathione (GSH) levels and a concomitant increase in Glutathione S-Transferases (GST) activity. Antioxidant N-acetyl-cysteine (1 mM) treatment prevented GSH decrease and N-cadherin and alpha-catenin up-regulation induced by MEHP. Our data suggest that oxidative stress signaling is a mechanism involved in adherent cell junctions disruption induced by MEHP in SC cultures. (C) 2015 Elsevier Inc. All rights reserved.
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