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. 2021 Apr 27;22(9):4558. doi: 10.3390/ijms22094558

Figure 4.

Figure 4

NAD+–SIRTs–PGC-1α pathway increases NAD+ pool and inhibits NAD+ consumption. NAD+ precursors: tryptophan (Trp), nicotinic acid (NA), nicotinamide (NAM), NAM mononucleotide (NMN), nicotinamide riboside (NR), vitamin B3; metabolic diseases: insulin resistance, type 2 diabetes.