Description
NAD⁺ is a central cellular cofactor involved in redox metabolism, mitochondrial respiration, DNA repair signaling, and NAD⁺-dependent enzyme activity. In preclinical mouse models, NAD⁺ repletion and NAD⁺ precursor strategies have been investigated for their effects on mitochondrial energy production, oxidative stress regulation, sirtuin signaling, and age-associated mitochondrial dysfunction.
Mechanistically, NAD⁺ matters because mitochondria use NADH to feed electrons into Complex I of the electron transport chain. More available NAD⁺ can also support enzymes like sirtuins, which regulate mitochondrial repair, antioxidant defenses, fuel metabolism, and mitochondrial biogenesis. Reviews and mouse studies connect NAD⁺ repletion with improved mitochondrial homeostasis, stress response, and age-related mitochondrial decline.
| Area observed in mice | Reported effect |
|---|---|
| Energy production | Improved mitochondrial respiration and ATP-generating capacity in some tissues |
| Redox balance | Better NAD⁺/NADH balance, supporting electron transport chain activity |
| Mitochondrial biogenesis | Increased signaling through pathways such as SIRT1–PGC-1α, linked to new mitochondrial formation |
| Mitochondrial stress resistance | More activation of sirtuin pathways, especially SIRT1 and SIRT3 |
| Aging models | Some studies show partial restoration of mitochondrial function in older mice |
| Brain models | NMN has been studied in Alzheimer’s-model mice for mitochondrial respiration and fission/fusion markers |
| Muscle models | NAD⁺ repletion has been studied for skeletal muscle mitochondrial efficiency and adaptation |
Additional information
| Concentration | 500mg, 1000mg |
|---|
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