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. 2019 Oct 30;10:2565. doi: 10.3389/fimmu.2019.02565

Figure 2.

Figure 2

Implications of inflammaging-dependent shunt of Trp metabolism. Age-related decline of tissue homeostasis causes a physiological low-grade chronic inflammatory phenotype known as inflammaging. We hypothesize that Trp is metabolized toward the Kyn pathway in order to control age-related inflammation. Consequent disturbances of Trp and Kyn metabolites could be involved in age-related diseases and reduced lifespan.