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- W2065141298 abstract "In the present work, we have studied glutathione transferase (GST) activity and GST subunits distribution in the liver of young and aged rats kept under hypoxic or hyperoxic normobaric conditions as model of oxidative stress. A significant decrease of GST activity was detected in young hypoxic rat liver, whereas a significant increase occurred in aged hypoxic liver. No significant alteration of activity was obtained in both young and aged rat livers subjected to hyperoxic treatment. Substrate specificity measurements, SDS/PAGE analysis and reverse-phase HPLC, of GSH-affinity purified fractions were used to study the changes in the GST subunits pattern occurring in the liver of rat as a consequence of hypoxic and hyperoxic treatment. The results demonstrate that young and aged rat liver has a different constitutive GST subunit pattern which are markedly and differentially altered in hypoxia or hyperoxia. The hyperoxic treatment caused an increase of GST subunit 3 in aged, but not in young liver. In aged liver, both the hypoxic and hyperoxic treatment produced a decrease of GST subunit 4. After hypoxic treatment GST subunit 3 significantly increased in both young and aged liver. GST subunit 1a increased in both young and adult liver after hyperoxia. Following hypoxia a decrease of subunit 1a was seen in both young and aged liver. After hypoxic treatment, subunit 6 doubled in young, but not in aged, livers. It was concluded that the alterations in GST subunit expression occurring in the liver as a consequence of hypoxic or hyperoxic treatment respond to the necessity of a better protection of liver against the products of oxidative metabolism." @default.
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- W2065141298 date "1996-06-01" @default.
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- W2065141298 title "Alteration of glutathione transferase subunits composition in the liver of young and aged rats submitted to hypoxic and hyperoxic conditions" @default.
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- W2065141298 doi "https://doi.org/10.1016/0167-4889(96)00029-8" @default.
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