- Cellular Metabolism Research
NAD+
- Compound type
Nicotinamide adenine dinucleotide coenzyme (not a peptide)
- Research status
Redox reactions, mitochondrial energy metabolism, sirtuins, PARPs, and cellular stress responses
- Scientific overview
Overview
NAD+ (nicotinamide adenine dinucleotide) is an essential coenzyme found in all living cells. It participates in oxidation-reduction reactions that support ATP production and also serves as a substrate for enzymes such as sirtuins, PARPs, and CD38. Research interest centers on how cellular NAD+ availability changes with age, metabolic stress, DNA damage, inflammation, and mitochondrial dysfunction. NAD+ is not a peptide, so it should appear in the Apex Research Library under a separate “Research Compounds” or “Cellular Metabolism” label rather than being described as a peptide.
How it works
Redox metabolism: NAD+/NADH cycling transfers electrons in glycolysis, the TCA cycle, and oxidative phosphorylation.
Sirtuin signaling: Sirtuins consume NAD+ while regulating protein deacetylation and metabolic stress responses.
DNA-repair signaling: PARP enzymes use NAD+ during DNA-damage responses, linking NAD+ availability to cellular repair and stress.
Research areas
Mitochondrial energy metabolism
Cellular aging
DNA-damage response
Sirtuin and PARP biology
Research / study context
Human metabolism research: Studies commonly measure NAD metabolites, precursor supplementation, mitochondrial endpoints, and metabolic markers.
Cell and animal research: Models examine NAD depletion/repletion, sirtuins, DNA repair, and age-related metabolic changes.
Key research findings
NAD+ is fundamental to cellular redox and signaling biology.
Age- and disease-associated changes in NAD metabolism are actively researched.
Evidence for specific delivery routes or anti-aging outcomes should be separated from the basic biology of NAD+.
Scientific reference starter set
Peptide Education Hub: NAD+ profile
PubMed search: NAD metabolism aging sirtuins PARP
Review literature: NAD+ metabolism and aging
Research material
View available specifications and batch documentation in the Apex catalog.
Important
For research use only. Not for human consumption. This profile is educational and does not provide treatment or personal-use instructions.