Visfatin Does Not Catalyze NMN Formation in Blood Plasma
Author Information
Author(s): Hara Nobumasa, Yamada Kazuo, Shibata Tomoko, Osago Harumi, Tsuchiya Mikako
Primary Institution: Shimane University Faculty of Medicine
Hypothesis
Does visfatin catalyze the formation of nicotinamide mononucleotide (NMN) in blood plasma?
Conclusion
The study concludes that visfatin does not participate in NMN formation under extracellular conditions due to the absence of necessary substrates and activators.
Supporting Evidence
- NMN was not detected in mouse blood plasma, indicating that visfatin does not catalyze its formation.
- ATP, an essential activator for NAMPT, was found to be almost absent in blood plasma.
- PRPP, another substrate for NAMPT, was also not detected in the plasma.
Takeaway
The study found that a protein called visfatin cannot make a substance called NMN in the blood because it needs special helpers that are not there.
Methodology
The researchers used liquid chromatography and mass spectrometry to analyze blood plasma and determine the activity of visfatin in catalyzing NMN formation.
Limitations
The study did not explore the potential effects of visfatin in other environments or conditions outside of blood plasma.
Digital Object Identifier (DOI)
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