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- W1557463485 abstract "Glutathione and GSH-related enzymes were determined in human Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) skin fibroblasts in order to relate muscular dystrophy to the redox state of the cell. The analysis of GSH, GSSG and total GSH levels in normal and dystrophic-cultured fibroblasts shows no differences in normal growth condition. However, the specific activity of two GSH-related enzymes, glutathione S-transferases (GST) and gamma-glutamylcysteine synthetase (gamma-GCS), shows significant variations between normal and both types of dystrophic skin fibroblasts. These results suggest that even in normal growth condition some components of GSH metabolism may be altered. A condition of sublethal oxidation obtained by H(2)O(2) treatment was able to show a difference in the cellular response of GSH system components between normal and dystrophic cells. While in DMD cells there is a decrease of roughly 55% in GSH and of 30% in total GSH concentration, no changes are measured in normal and BMD cells. The remarkable increase in glutathione peroxidase (GPx) activity and decrease in GSH-reductase (GR) activity measured in DMD cells can in part explain these changes. These results indicate a different capacity of DMD cells to support oxidative stress with respect to BMD and normal cells, and suggest a possible role of the GSH-antioxidant system in dystrophic pathology." @default.
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- W1557463485 date "1999-11-01" @default.
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- W1557463485 title "GSH system in relation to redox state in dystrophic skin fibroblasts" @default.
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- W1557463485 doi "https://doi.org/10.1016/s0300-9084(99)00334-x" @default.
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