Evidence map›Paper›PMID 22612861›Full record

ReviewASN neuro2012

Fueling and imaging brain activation.

Gerald A Dienel

Erratum issuedOpen access · goldAbstract readReview
In one paragraph

Review in ASN neuro, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 85 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 2% 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

85 citing papers in PubMed, 2 syntheses or guidelines pooled it, 174 citations in OpenAlex.

  1. Glucose sparing by glycogenolysis (GSG) determines the relationship between brain metabolism and neurotransmission.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Pooled it
  2. Pooled it
  3. Metabolic Brain Disorders: Prodromes, Symptoms, and Syndromes.International journal of molecular sciences · 2026
    Review
  4. 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
  5. Quantitative Measurement of Hexoses by Betaine Aldehyde Derivatisation.International journal of molecular sciences · 2026
    Article
  6. Review
  7. Glycogen supports glycolytic plasticity in neurons.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Review
  9. Review
  10. Human Brain Deuterium Metabolic Imaging at 7 T: Impact of Different [6,6'-Journal of magnetic resonance imaging : JMRI · 2025
    Article
  11. Parkinson's disease and glucose metabolism impairment.Translational neurodegeneration · 2025
    Review
  12. Review
  13. Review
  14. The control costs of human brain dynamics.Network neuroscience (Cambridge, Mass.) · 2025
    Article
  15. Neuroglia and brain energy metabolism.Handbook of clinical neurology · 2025
    Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Review

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Gerald A DienelDepartment of Neurology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, U.S.A.
University of Arkansas for Medical Sciences · US

Funding

FUNCTIONAL METABOLIC ACTIVITY IN GLIA IN VIVOR01NS038230 · NINDS · UNIVERSITY OF ARKANSAS MED SCIS LTL ROCK · PI DIENEL, GERALD A. · 2000 to 2003
$1.3M
Endoplasmic reticulum stress in diabetic brainR01DK081936 · NIDDK · UNIV OF ARKANSAS FOR MED SCIS · PI DIENEL, GERALD A. · 2009 to 2012
$1.3M
Functional activity in gliaR56NS038230 · NINDS · UNIV OF ARKANSAS FOR MED SCIS · PI DIENEL, GERALD A. · 2009 to 2009
$363k
NIDDK NIH HHS DK081936NIDDK NIH HHS R01 DK081936NINDS NIH HHS NS038230NINDS NIH HHS R01 NS038230NINDS NIH HHS R56 NS038230
6 · The paper itself

Abstract

Metabolic signals are used for imaging and spectroscopic studies of brain function and disease and to elucidate the cellular basis of neuroenergetics. The major fuel for activated neurons and the models for neuron-astrocyte interactions have been controversial because discordant results are obtained in different experimental systems, some of which do not correspond to adult brain. In rats, the infrastructure to support the high energetic demands of adult brain is acquired during postnatal development and matures after weaning. The brain's capacity to supply and metabolize glucose and oxygen exceeds demand over a wide range of rates, and the hyperaemic response to functional activation is rapid. Oxidative metabolism provides most ATP, but glycolysis is frequently preferentially up-regulated during activation. Underestimation of glucose utilization rates with labelled glucose arises from increased lactate production, lactate diffusion via transporters and astrocytic gap junctions, and lactate release to blood and perivascular drainage. Increased pentose shunt pathway flux also causes label loss from C1 of glucose. Glucose analogues are used to assay cellular activities, but interpretation of results is uncertain due to insufficient characterization of transport and phosphorylation kinetics. Brain activation in subjects with low blood-lactate levels causes a brain-to-blood lactate gradient, with rapid lactate release. In contrast, lactate flooding of brain during physical activity or infusion provides an opportunistic, supplemental fuel. Available evidence indicates that lactate shuttling coupled to its local oxidation during activation is a small fraction of glucose oxidation. Developmental, experimental, and physiological context is critical for interpretation of metabolic studies in terms of theoretical models.

Indexed as

AnimalsBrainEnergy MetabolismGlucoseHumansGlucose

Identifiers

PMID22612861
PMCPMC3401074
OpenAlexW2108933333

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.