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. Author manuscript; available in PMC: 2013 Jul 2.
Published in final edited form as: Nat Commun. 2013;4:1881. doi: 10.1038/ncomms2898

Figure 7. Schematic representation of the mechanism of action of vitamin C against M. tuberculosis.

Figure 7

Vitamin C enters M. tuberculosis cells and reduces ferric ions to generate ferrous ions which, in presence of oxygen, will produce superoxide, hydrogen peroxide and hydroxyl radicals via the Harber-Weiss and Fenton reactions. The production of these reactive oxygen species leads to the DNA damage, alteration of lipids and redox balance.