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. 2018 Nov 30;8(4):87. doi: 10.3390/metabo8040087

Figure 2.

Figure 2

The oxidative branch of the PPP is a major supplier of NADPH for glutathione recycling. The reduction of glutathione (GSH) disulfide to glutathione via glutathione reductase needs NADPH to be completed. Thus, oxidized glutathione (GSSG):GSH and NADPH:NADP+ ratios are impaired due to oxidative stress.