Evidence map›Paper›PMID 38028810›Full record

ArticleFrontiers in physiology2023

Effect of circadian rhythm on NAD and other metabolites in human brain.

Bernard Cuenoud, Zhiwei Huang, Mickael Hartweg, Mark Widmaier, SongI Lim, Daniel Wenz, Lijing Xin

Open access · goldAbstract read
In one paragraph

Article in Frontiers in physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.4field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 9 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Bernard CuenoudResearch and Clinical Development, Nestlé Health Science, Epalinges, Switzerland.
Zhiwei HuangCIBM Center for Biomedical Imaging, Lausanne, Switzerland.
Mickael HartwegClinical Research Unit, Nestlé Research and Development, Lausanne, Switzerland.
Mark WidmaierCIBM Center for Biomedical Imaging, Lausanne, Switzerland.
SongI LimCIBM Center for Biomedical Imaging, Lausanne, Switzerland.
Daniel WenzCIBM Center for Biomedical Imaging, Lausanne, Switzerland.
Lijing XinCIBM Center for Biomedical Imaging, Lausanne, Switzerland.
École Polytechnique Fédérale de Lausanne · CHCentre d'Imagerie BioMedicale · CHNestlé (Switzerland) · CHUniversité de Sherbrooke · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nicotinamide Adenine Dinucleotide (NAD) plays a central role in the master circadian clock of the brain (the suprachiasmatic nuclei, SCN) as demonstrated in many model organisms. NAD acts as an enzyme co-factor and substrate and its modulation was found to be tightly regulated to the periodicity of the cycles. However, in human brain, the effect of the circadian rhythm (CR) on the metabolism of the SCN and other brain regions is poorly understood. We conducted a magnetic resonance spectroscopy (MRS) study at a high magnetic field, measuring the occipital brain NAD levels and other metabolites in two different morning and afternoon diurnal states in 25 healthy participants. Salivary cortisol levels were determined to confirm that the experiment was done in two chronologically different physiological conditions, and a behavioral test of risk-taking propensity was administered. Overall, we found that the CR did not significantly affect NAD levels in the occipital brain region. The other brain metabolites measured, including lactate, were not significantly affected by the CR either, except for taurine. The CR did impact risk-taking behavior and salivary cortisol level, confirming that the participants were in two circadian different behavioral and physiological states in the morning and in the afternoon. Measurement of the CR effect on NAD and taurine levels in other brain regions might provide stronger effects.

Indexed as

braincircadian rhythmlactatemetabolismMRSNADredoxtaurine

Identifiers

PMID38028810
PMCPMC10665902
OpenAlexW4388636547

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.