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Physiology Aspects of Pyridine Nucleotide Regulation in Mammals

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Publisher Springer
Specialty Biochemistry
Date 1980 Dec 16
PMID 6450878
Citations 11
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Abstract

Tissue levels of NAD+ appear to be regulated primarily by the concentration of extracellular nicotinamide, which in turn is controlled by the liver in a hormone-sensitive manner. Hepatic regulation involves the conversion of excess serum nicotinamide to 'Storage NAD+' and inactive excretory products, and the replenishment of serum nicotinamide by the hydrolysis of 'Storage NAD+.' Tryptophan and nicotinic acid contribute to 'Storage NAD+,' and thus are additional sources of nicotinamide. In response to administered nicotinamide, there is a preferential utilization of ATP and PRPP (5-phosphorylribose-1-pyrophosphate) for the biosynthesis of NAD+. This biosynthetic priority, whose purpose appears to be the conservation of intracellular nicotinamide, may explain why nicotinamide inhibits RNA and DNA synthesis in regenerating tissues and why elevated nicotinamide levels are toxic to growing animals and to mammalian cells in culture.

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References
1.
Clark J, Greenbaum A, McLean P . The concentration and biosynthesis of nicotinamide nucleotides in the livers of rats treated with carcinogens. Biochem J. 1966; 98(2):546-56. PMC: 1264876. DOI: 10.1042/bj0980546. View

2.
Sugimura T . Poly(adenosine diphosphate ribose). Prog Nucleic Acid Res Mol Biol. 1973; 13:127-51. DOI: 10.1016/s0079-6603(08)60102-6. View

3.
GARDNER D, Sato G, Kaplan N . Pyridine nucleotides in normal and nicotinamide depleted adrenal tumor cell cultures. Dev Biol. 1972; 28(1):84-93. DOI: 10.1016/0012-1606(72)90128-5. View

4.
Warburg O . On the origin of cancer cells. Science. 1956; 123(3191):309-14. DOI: 10.1126/science.123.3191.309. View

5.
Rechsteiner M, Hillyard D, Olivera B . Turnover at nicotinamide adenine dinucleotide in cultures of human cells. J Cell Physiol. 1976; 88(2):207-17. DOI: 10.1002/jcp.1040880210. View