The authors inhibited the acsd-1 gene, which encodes the equivalent of ACMSD in nematodes. This inhibition did increase NAD+ levels.
The authors therefore developed chemical inhibitors of ACMSD, and tested whether these inhibitors could improve outcomes in mouse models of two ageing-related diseases: diet-induced fatty liver disease and acute kidney injury.
Katsyuba and colleagues’ data confirmed the potential for therapeutic NAD+ augmentation — treatment with their inhibitors protected against disease in these models. The results also suggest that increases in the de novo NAD+ synthesis pathway alone are sufficiently robust to ameliorate liver and kidney diseases associated with low NAD+ levels.
https://www.nature.c...586-018-07088-4