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- W2070792620 abstract "Hepatoma cells show alterations in the response to oxidative stress (decreased lipid peroxidation) and in xenobiotic metabolism enzymes (decreased P450, increased GST and ALDH3). This study examined the effect of lipid peroxidation on the expression of the above enzymes in two rat hepatoma cell lines (MH(1)C(1) and 7777). To induce oxidative stress, cells were exposed to arachidonic acid (to increase lipid peroxidation substrate) and/or to beta-naphthoflavone (to increase CYP450), and treated with one dose of iron/histidine. The cells, that were still viable after the challenge, were refed with the culture medium and CYP1A1, GST, and ALDH3 enzymes monitored for 1, 6, 12, and 24 h. Treatments that increased markers indicative of lipid peroxidation are associated with a decrease in enzyme activities, which was permanent for CYP1A1 and transient for the other enzymes. We speculate from these data that aldehydic byproducts of lipid peroxidation may be responsible for these effects. Thus, restoration of lipid peroxidation in hepatoma cells seems to induce a rapid adaptation to oxidative stress, which is achieved by a simultaneous decrease of reactive oxygen species production and an increase in the two main enzymes involved in the removal of the aldehydic products of lipid peroxidation." @default.
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- W2070792620 date "2000-12-01" @default.
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- W2070792620 title "Changes of CYP1A1, GST, and ALDH3 enzymes in hepatoma cell lines undergoing enhanced lipid peroxidation" @default.
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- W2070792620 doi "https://doi.org/10.1016/s0891-5849(00)00428-7" @default.
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