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- W1994414941 abstract "Previously, we have documented an ethanol (E)-induced oxidative stress (OS) in cultured fetal rat hepatocytes (FRH). The cause of this is uncertain, but an inhibition of key antioxidant enzymes could be a/the factor. OS was also observed in fetal liver (FL) during in utero E exposure, but not in maternal liver, a difference that might be related to selectively lower enzymatic defenses in the fetus. Here, we record effects of E on activities of catalase (Cat), superoxide dismutase (Cu, Zn SOD and Mn SOD), glutathione peroxidase (GPX), and glutathione-S-transferase (GST) in FRH isolated from 20-day-old fetuses and exposed to E (2 mg/ml) for up to 24 h and we compare these to adult rat liver data. E treatment decreased fetal liver reduced glutathione (GSH) pools by 23% (p < 0.05) and increased malondialdehyde (MDA) by 14% (p < 0.05) within 24 h of E exposure. E caused an increase in fetal liver Cat by 18%, 32%, and 47% by 3, 6, and 24 h of E, respectively (p < 0.05). A 24-h E exposure increased Cu, Zn SOD by 22% (p < 0.05) and Mn SOD by 21% (p < 0.05). A 24 h E treatment increased GPX by 18% (p < 0.05) and GST by 17% (p < 0.05). Cat in whole FL was 26% of adult (p < 0.05) whereas Cu, Zn SOD and Mn SOD in whole FL were 12% and 11% of adult levels (p < 0.05). GPX and GST in FL were 11% and 28% of adult values (p < 0.05). It is concluded that in FRH, E-induced OS is not caused by impaired activities of these enzymes, but their low basal activities (vs. adult) may predispose the fetus to OS." @default.
- W1994414941 created "2016-06-24" @default.
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- W1994414941 date "1996-07-01" @default.
- W1994414941 modified "2023-09-25" @default.
- W1994414941 title "Ethanol-induced oxidative stress and enzymatic defenses in cultured fetal rat hepatocytes" @default.
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- W1994414941 doi "https://doi.org/10.1016/0741-8329(96)00002-x" @default.
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