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- W2693725906 abstract "Mono-(2-ethylhexyl) phthalate (MEHP) is an active metabolite of di-(2-ethylhexyl) phthalate (DEHP). MEHP has toxic effects on cardiovascular system, but the possible molecular mechanisms are not completely elucidated. In our study, 3-methyladenine (3-MA), an autophagosome formation inhibitor, protected the EA.hy926 cells against MEHP cytotoxicity, and rapamycin, an autophagosome formation stimulator, further decreased the cell viability in the MEHP-treated EA.hy926 cells. Thus, autophagy may play an important role in MEHP-induced toxicity. MEHP increased the autophagosome number in EA.hy926 cells detected under transmission electron microscope. Collapses of ΔΨm and reactive oxygen species (ROS) level were increased in a dose-dependent manner under treatment with 0-200μM MEHP for 24h. N-acetyl-l-cysteine (NAC), a ROS inhibitor, protected against MEHP-induced cytotoxicity and decreased the protein expression of LC3-II. These findings suggested that MEHP-induced autophagic cell death was ROS-dependent in EA.hy926 cells. Knockdown of Akt1 with Akt1 siRNA aggravated MEHP-induced cell death, and insulin, an Akt1 activator, alleviated MEHP-induced cell death. These results were consistent with the expression of LC3-II using western blot. The phospho-Akt1(Ser473) (p-Akt1) level was enhanced after pretreatment with NAC. In conclusion, it is possible that ROS elicited autophagy through Akt1 pathway in the MEHP-treated EA.hy926 cells." @default.
- W2693725906 created "2017-06-30" @default.
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- W2693725906 date "2017-10-01" @default.
- W2693725906 modified "2023-09-26" @default.
- W2693725906 title "Mono-(2-ethylhexyl) phthalate induced ROS-dependent autophagic cell death in human vascular endothelial cells" @default.
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- W2693725906 doi "https://doi.org/10.1016/j.tiv.2017.06.024" @default.
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