Evidence map›Paper›PMID 21035308›Full record

ReviewNutrition (Burbank, Los Angeles County, Calif.)2011

Brain fuel metabolism, aging, and Alzheimer's disease.

Stephen Cunnane, Scott Nugent, Maggie Roy, Alexandre Courchesne-Loyer, Etienne Croteau, Sébastien Tremblay, Alex Castellano, Fabien Pifferi, Christian Bocti, Nancy Paquet and 7 more

3 registry-linked trialsAbstract readReview
In one paragraph

Review in Nutrition (Burbank, Los Angeles County, Calif.), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 320 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
320citing papers in PubMed, 2 pooled it
10.8field-weighted citation impact, top 1% 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.

NCT02551419 nacompletednot on this mapstarted 2015, after this paper: background citation

Effect of a Ketogenic Supplement on Brain Energy Metabolism Measured by Neuroimaging in Mild Cognitive Impairment

TypeinterventionalSponsorUniversité de SherbrookeRan2015 to 2019Enrolled82ConditionsMild Cognitive ImpairmentArmsketogenic drink, placebo
NCT04551040 phase1active not recruitingnot on this mapstarted 2021, after this paper: background citation

Assessing Target Engagement of Terazosin in Healthy Adults

TypeinterventionalSponsorUniversity of IowaRan2021 to 2025Enrolled18ConditionsHealthyArmsTerazosin
NCT07364162 phase2recruitingnot on this mapstarted 2026, after this paper: background citation

Exogenous Ketone Ester Supplementation in ICU Delirium (KETONES ICU)

TypeinterventionalSponsorVanderbilt University Medical CenterRan2026 to 2027Enrolled40ConditionsICU Delirium, Critical IllnessArmsKetone monoester, Placebo
3 · Its place in the literature

Who cites it

320 citing papers in PubMed, 2 syntheses or guidelines pooled it, 588 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Review
  7. Article
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  11. Higher fasting brain glucose is associated with lower gray matter volume in healthy adults.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Article
  12. Review
  13. Article
  14. Article
  15. Article
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  17. Sex differences in brain glucose metabolism and Alzheimer's disease risk and progression.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  18. Article
  19. Article
  20. Article

260 more citing papers are in PubMed but not listed here.

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

17 authors at 4 institutions in 3 countries.

Stephen CunnaneResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Physiology and Biophysics, Université de Sherbrooke, Sherbrooke, QC, Canada. Electronic address: stephen.cunnane@usherbrooke.ca.
Scott NugentResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Physiology and Biophysics, Université de Sherbrooke, Sherbrooke, QC, Canada.
Maggie RoyResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Physiology and Biophysics, Université de Sherbrooke, Sherbrooke, QC, Canada.
Alexandre Courchesne-LoyerResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Physiology and Biophysics, Université de Sherbrooke, Sherbrooke, QC, Canada.
Etienne CroteauDepartment of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Sébastien TremblayResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Alex CastellanoResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada.
Fabien PifferiUMR CNRS-MNHN 7179, Brunoy, France.
Christian BoctiResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Nancy PaquetDepartment of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Hadi BegdouriDepartment of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
M'hamed BentourkiaDepartment of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Eric TurcotteDepartment of Radiobiology and Nuclear Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Michèle AllardUMR CNRS 5231 and Ecole Pratique des Hautes Etudes, France.
Pascale Barberger-GateauINSERM U897, Bordeaux F-33076, France; Université Victor Segalen Bordeaux 2, Bordeaux F-33076, France.
Tamas FulopResearch Center on Aging, Health and Social Services Center-Sherbrooke University Geriatrics Institute, Université de Sherbrooke, Sherbrooke, QC, Canada; Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada.
Stanley I RapoportBrain Physiology and Metabolism Section, National Institute of Aging, Bethesda, MD, USA.
Université de Sherbrooke · CACentre National de la Recherche Scientifique · FRInserm · FRNational Institute on Aging · US

Funding

Brain Imaging In Human Aging, Alzheimer Disease And Other DisordersZIAAG000148 · NIA · NATIONAL INSTITUTE ON AGING · PI RAPOPORT, STANLEY I. · 2009 to 2016
$1.4M
Brain Imaging In Human Aging and Alzheimers DiseaseZ01AG000148 · NIA · NATIONAL INSTITUTE ON AGING · PI RAPOPORT, STANLEY I. · 2001 to 2008
$241k
CIHRIntramural NIH HHS Z01 AG000148
6 · The paper itself

Abstract

Lower brain glucose metabolism is present before the onset of clinically measurable cognitive decline in two groups of people at risk of Alzheimer's disease--carriers of apolipoprotein E4, and in those with a maternal family history of AD. Supported by emerging evidence from in vitro and animal studies, these reports suggest that brain hypometabolism may precede and therefore contribute to the neuropathologic cascade leading to cognitive decline in AD. The reason brain hypometabolism develops is unclear but may include defects in brain glucose transport, disrupted glycolysis, and/or impaired mitochondrial function. Methodologic issues presently preclude knowing with certainty whether or not aging in the absence of cognitive impairment is necessarily associated with lower brain glucose metabolism. Nevertheless, aging appears to increase the risk of deteriorating systemic control of glucose utilization, which, in turn, may increase the risk of declining brain glucose uptake, at least in some brain regions. A contributing role of deteriorating glucose availability to or metabolism by the brain in AD does not exclude the opposite effect, i.e., that neurodegenerative processes in AD further decrease brain glucose metabolism because of reduced synaptic functionality and hence reduced energy needs, thereby completing a vicious cycle. Strategies to reduce the risk of AD by breaking this cycle should aim to (1) improve insulin sensitivity by improving systemic glucose utilization, or (2) bypass deteriorating brain glucose metabolism using approaches that safely induce mild, sustainable ketonemia.

Indexed as

AgingAlzheimer DiseaseBrainGlucoseHumansGlucose

Identifiers

PMID21035308
PMCPMC3478067
OpenAlexW1988453006

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

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.