Based on the previous evidences, it rusults important to maintain
cellular NAD + availability especially in mitochondria when stresses induce a
major consumption of NAD + and ATP and prone the organism more susceptible to ROS
damages.
DNA
damage is repairable, but PARPS consume up to 80 % of available NAD + in older humans, meaning it is a
major cause of NAD + shortage, leaving less NAD + for
cellular respiration, fighting inflammation, and disease (21)