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. 2017 May 3;10:1178646917704662. doi: 10.1177/1178646917704662

Figure 10.

Figure 10

Predisposing phenotype for inflammatory disease driven by high nicotinamide in diet leads to reduced IDO activity. The more immediate triggers to these diseases and the disease process itself may sometimes lead to the apparent paradox of induced IDO as a compensation that may exacerbate or mitigate the disease. Lack of early infections or allergens may be ultimate causes but can act later as proximate triggers. IDO indicates indoleamine 2,3-dioxygenase.