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. Author manuscript; available in PMC: 2011 Nov 24.
Published in final edited form as: Cell. 2010 Nov 24;143(5):802–812. doi: 10.1016/j.cell.2010.10.002

Figure 7. A Model for the CR-mediated Prevention of AHL in Mammals.

Figure 7

In response to CR, SIRT3 activates Idh2, thereby increasing NADPH levels in mitochondria. This in turn leads to an increased ratio of GSH:GSSG and decreased levels of ROS, thereby resulting in protection from oxidative stress and prevention of AHL in mammals.