The function of nicotinamide phosphoribosyl transferase (NAMPT) and its role in diseases.
Level 5 - mechanism / opinion, no new human data
Narrative review of biological mechanisms without new empirical human data
PubMed 39513038 · doi:10.3389/fmolb.2024.1480617
What was done
This paper reviewed the structure, biological functions, and disease correlations of nicotinamide phosphoribosyltransferase (NAMPT), focusing on its role in the mammalian nicotinamide adenine dinucleotide (NAD) salvage pathway and its interactions with sirtuin deacetylases.
What was found
The abstract reports no numerical data or quantitative outcomes. It describes NAMPT as the rate-limiting enzyme that synthesizes nicotinamide mononucleotide (NMN) to maintain intracellular NAD levels, forming an anti-stress defense network with NAD-dependent sirtuins (SIRTs) to regulate metabolism, reprogramming, aging, and apoptosis.
Why it matters
Understanding the NAMPT-NAD-sirtuin axis outlines how cellular energy metabolism and stress defenses interface in human disease, highlighting targets for potential therapies.
Limits
This is a narrative review with no systematic search methodology, quantitative synthesis, or original experimental data. No specific disease contexts, clinical outcomes, or therapeutic effect sizes are quantified in the abstract.
Cited by
- supports Sirtuins require NAD for fuel, and NAD requires NMN as a precursor.