Diurnal Rhythm of Circulating Nicotinamide Phosphoribosyltransferase (Nampt/Visfatin/PBEF): Impact of Sleep Loss and Relation to Glucose Metabolism

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Diurnal Rhythm of Circulating Nicotinamide Phosphoribosyltransferase (Nampt/Visfatin/PBEF) : Impact of Sleep Loss and Relation to Glucose Metabolism

Benedict, Christian (author): Uppsala universitet,Funktionell farmakologi

Shostak, Anton (author)

Lange, Tanja (author)

Brooks, Samantha J (author): Uppsala universitet,Funktionell farmakologi

Schiöth, Helgi B (author): Uppsala universitet,Funktionell farmakologi

Schultes, Bernd (author)

Born, Jan (author)

Oster, Henrik (author)

Hallschmid, Manfred (author)

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(creator_code:org_t)

The Endocrine Society, 2012
2012
English.
In: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 97:2, s. E218-E222

Related links:: https://academic.oup...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Context Animal studies indicate that nicotinamide phosphoribosyltransferase [Nampt/visfatin/pre-B-cell colony-enhancing factor (PBEF)] contributes to the circadian fine-tuning of metabolic turnover. However, it is unknown whether circulating Nampt concentrations, which are elevated in type 2 diabetes and obesity, display a diurnal rhythm in humans.Objective Our objective was to examine the 24-h profile of serum Nampt in humans under conditions of sleep and sleep deprivation and relate the Nampt pattern to morning postprandial glucose metabolism.InterventionFourteen healthy men participated in two 24-h sessions starting at 1800 h, including either regular 8-h-night sleep or continuous wakefulness. Serum Nampt and leptin were measured in 1.5- to 3-h intervals. In the morning, plasma glucose and serum insulin responses to standardized breakfast intake were determined.Main Outcome Measures Under regular sleep-wake conditions, Nampt levels displayed a pronounced diurnal rhythm, peaking during early afternoon (P < 0.001) that was inverse to leptin profiles peaking in the early night. When subjects stayed awake, the Nampt rhythm was preserved but phase advanced by about 2 h (P < 0.05). Two-hour postprandial plasma glucose concentrations were elevated after sleep loss (P < 0.05), whereas serum insulin was not affected. The relative glucose increase due to sleep loss displayed a positive association with the magnitude of the Nampt phase shift (r = 0.54; P < 0.05).ConclusionsSerum Nampt concentrations follow a diurnal rhythm, peaking in the afternoon. Sleep loss induces a Nampt rhythm phase shift that is positively related to the impairment of postprandial glucose metabolism due to sleep deprivation, suggesting a regulatory impact of Nampt rhythmicity on glucose homeostasis.

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By the author/editor: Benedict, Christ ...; Shostak, Anton; Lange, Tanja; Brooks, Samantha ...; Schiöth, Helgi B; Schultes, Bernd; show more...; Born, Jan; Oster, Henrik; Hallschmid, Manf ...; show less...

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