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. 2020 Sep 2;8:848. doi: 10.3389/fcell.2020.00848

FIGURE 1.

FIGURE 1

Effects of Fe and Cd on mitochondrial reactive oxygen species (ROS). (A) Sources of physiological ROS from mitochondria and their release into the cytosol. (B) Fe increase mitochondrial ROS formation and potentially inhibits antioxidants. (C) Cd inhibits the electron transport chain, binds GSH as well as decreases antioxidant enzyme activity to augment mitochondrial ROS generation. See text for further details. 2-OADC, 2-oxoacid dehydrogenase complexes; AQP, aquaporin; CAT, catalase; cytc, cytochrome c; ETC, electron transport chain; GSH, glutathione; IMS, intermembrane space; NOX4, NADPH oxidase 4; PDH, pyruvate dehydrogenase; SOD, superoxide dismutase; SUOX, sulfite oxidase; ubi, ubiquinone; VDAC, voltage-dependent anion channel.