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- W2058804923 abstract "Oxidative stress results from the imbalance between reactive oxygen species (ROS) and ROS-scavenging molecules. Among them, cytosolic glutathione peroxidase (GPX1) plays a major role as it reduces a large part of intracellular ROS. Endothelial cells are a barrier for potentially aggressive molecules circulating in the blood stream and, therefore, are often under great oxidative stress. Thus, we investigated the potentially protective effects of GPX1 overexpression in the endothelial cell line, ECV304. We found that chronic GPX1 overexpression delays cell growth without affecting viability or decreasing resistance to hydrogen peroxide-induced oxidative stress. As GPX1 overexpression could drain the cellular reduced glutathione (GSH) pool, we also tested the effects of extracellular GSH supplementation on cell growth. Despite its largely referenced beneficial effects for cells, GSH was toxic for ECV304 cells in a dose-dependent manner but GSH-induced toxicity was reduced in selenium supplemented cultures and completely abolished in ECV304 overexpressing GPX1, compared to control. In summary, GPX1 overexpression delays cell growth and protects them from GSH and H2O2 toxicity." @default.
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- W2058804923 date "2010-01-01" @default.
- W2058804923 modified "2023-09-26" @default.
- W2058804923 title "Mapping of a Colitis Locus in GPX1/2-DKO Mice" @default.
- W2058804923 doi "https://doi.org/10.1016/j.freeradbiomed.2010.10.394" @default.
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