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- W162573190 abstract "Isolated rat alveolar macrophages (RAM) which had taken-up and accumulated extracellular (0-500 {mu}M) taurine (TAU) were exposed to 0.45 {plus minus} 0.05 ppm ozone for 30 minutes in a modified tissue culture flask containing TAU-supplemented medium. Recovered cells were assayed for oxidant damage and media analyzed for leakage of intracellular components. Cell viability significantly increased, while recovery of cells decreased (possibly due to increased adherence) with increasing TAU. At 100 {mu}M (rat plasma TAU level), TAU protected against the ozone-induced increase in zymosan-stimulated chemiluminescence, diminished leakages of lipid peroxidation products and protein into the medium, and partially restored the ozone-inactivated Na{sup +}/K{sup +} ATPase activity of RAM. Efflux of oxidized glutathione was maximized and K{sup +} leakage was minimized by the addition of 250 {mu}M TAU. At 250-500 {mu}M TAU, leakages of lipid peroxidation products and protein were enhanced, while the intracellular TAU content dramatically increased. These results indicate that TAU has both direct and indirect antioxidant properties at low levels and pro-oxidant properties at high levels in RAM." @default.
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- W162573190 date "1990-02-26" @default.
- W162573190 modified "2023-09-27" @default.
- W162573190 title "Antioxidant properties of taurine in rat alveolar macrophages" @default.
- W162573190 hasPublicationYear "1990" @default.
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