The stratum corneum has a passive transepidermal absorption ceiling that sits at roughly 500 daltons, which means anything smaller than that has a chance of getting through intact skin and anything larger does not 4
When injury occurs, this balance shifts to strongly elevate NOS2 expression specifically in healing contexts, channeling nitric oxide toward tissue repair
Diaz A, Rangel P, Montes de Oca Y, Lledas F, Hansberg W (2001)
Nicotinamide mononucleotide supplementation enhances aerobic capacity in amateur runners: a randomized, double-blind study
The first incorporates GSH into the mitochondria by inorganic phosphate exchange and the second by exchange of 2-oxoglutarate (Figures 2, 4)
These transcription factors play a critical role in regulating various cellular processes, including apoptosis (programmed cell death), oxidative stress response, and cell cycle regulation