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- W1964259610 abstract "Increased oxidative stress (OS) is implicated in the pathophysiology of several pregnancy disorders. We aimed to investigate the effect of tert-butylhydroperoxide (TBHP)-induced OS upon the placental transport of the neutral amino acids L-methionine (L-Met) and L-alanine (L-Ala), by using a human trophoblast cell model (BeWo cells). TBHP reduced both total and Na(+)-independent (14)C-L-Met intracellular steady-state accumulation over time (Amax), by reducing non-system L-mediated uptake - most probably system y(+) - while having no effect on system L. Moreover, TBHP reduced total (14)C-L-Ala Amax through an inhibition of system A. The effect of TBHP upon total, but not system A-mediated, (14)C-L-Ala uptake was dependent upon phosphoinositide 3-kinase (PI3K) and protein kinase C (PKC) activation, and was completely prevented by the polyphenol quercetin. In conclusion, a reduction in placental uptake of neutral amino acids may contribute to the deleterious effects of pregnancy disorders associated with OS." @default.
- W1964259610 created "2016-06-24" @default.
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- W1964259610 date "2013-09-01" @default.
- W1964259610 modified "2023-10-18" @default.
- W1964259610 title "Oxidative stress decreases uptake of neutral amino acids in a human placental cell line (BeWo cells)" @default.
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- W1964259610 doi "https://doi.org/10.1016/j.reprotox.2013.06.073" @default.
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