Abstract
Ascorbate and several phenolic compounds readily oxidise in cell culture media to generate hydrogen peroxide. However, addition of α-ketoglutarate, which is known to be released by several cell types, decreased the levels of H 2O 2, and the α-ketoglutarate was depleted and converted to succinate. These observations could account for previous reports of the protective effects of α-ketoglutarate in promoting the growth of cells in culture, and may contribute to explaining some of the variability in the literature in reported rates of H 2O 2 production from autoxidisable compounds in cell culture systems.
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