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.