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NAD+ (nicotinamide adenine dinucleotide) is a naturally occurring coenzyme present in all living cells, essential for electron transfer in the cell's energy pathways.
Role in Cellular Bioenergetics
NAD+ participates in numerous redox reactions and is a key cofactor for enzymes involved in DNA repair and the regulation of cellular metabolism. Cellular NAD+ levels naturally decline over time, which is why this coenzyme is a frequent subject of cellular aging research.
NAD+ and NADH - Two States of the Same Coenzyme
NAD+ exists in two interconnected forms - oxidized (NAD+) and reduced (NADH). The ratio between these two forms within a cell, known as redox status, is used in research as an indicator of the cell's metabolic state. Changes in this ratio are studied in the context of cellular respiration, oxidative stress, and mitochondrial energy efficiency.
Sirtuins and NAD+-Dependent Enzymes
One reason NAD+ holds a central place in cellular aging research is its role as a substrate for sirtuins - a family of enzymes (SIRT1-SIRT7) that regulate processes such as DNA repair, inflammatory response management, and cellular metabolism, and which require available NAD+ for their activity. When cellular NAD+ levels decline, sirtuin activity decreases, which researchers study as one of the possible mechanisms linked to cellular aging. This relationship between NAD+ and sirtuins has been one of the most active areas of longevity research over the past decade.
Research Models of Energy Metabolism
In laboratory settings, NAD+ is used to study mitochondrial function, cellular energy balance, and pathways associated with longevity. Such models often also include other mitochondria-related materials such as MOTS-c or SS-31.
Available Specifications
Peptiva offers NAD+ in two concentrations, 500 mg and 1000 mg, in vial or pen laboratory format, depending on the planned scope of research.
The Importance of Batch Documentation
Before ordering, it's recommended to check the availability of COA documentation for the specific batch, as analytical data on purity and identity varies between manufacturers and batches.
The content of this article is intended for general research context and does not constitute medical advice or a recommendation for use in humans or animals.