Evidence map›Paper›PMID 23332354›Full record

ArticleBiological psychiatry2013

Abnormal activity-dependent brain lactate and glutamate+glutamine responses in panic disorder.

Richard J Maddock, Michael H Buonocore, Amber R Miller, Jong H Yoon, Steffan K Soosman, April M Unruh

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Biological psychiatry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04181008 (Pharmacokinetics of Amiloride Nasal Spray in Healthy Volunteers), which is not on this map. Cited by 25 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 5 pooled it
1.5field-weighted citation impact, top 23% 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.

NCT04181008 early_phase1completednot on this mapstarted 2020, after this paper: background citation

Pharmacokinetics of Amiloride Nasal Spray in Healthy Volunteers

TypeinterventionalSponsorUniversity of UtahRan2020 to 2023Enrolled15ConditionsPharmacokineticsArmsAmiloride
3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 5 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Brain lactate and pH in schizophrenia and bipolar disorder: a systematic review of findings from magnetic resonance studies.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Pooled it
  6. Population Pharmacokinetics of Intranasal Amiloride in Healthy Volunteers.European journal of drug metabolism and pharmacokinetics · 2026
    Trial
  7. Article
  8. Article
  9. Article
  10. Lactate: A Theranostic Biomarker for Metabolic Psychiatry?Antioxidants (Basel, Switzerland) · 2023
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Panic Anxiety in Humans with Bilateral Amygdala Lesions: Pharmacological Induction via Cardiorespiratory Interoceptive Pathways.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
  20. Review
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

6 authors at 1 institution in 1 country.

Richard J MaddockDepartment of Psychiatry, University of California Davis Medical Center, Sacramento, California 95817, USA. rjmaddock@ucdavis.edu
Michael H Buonocore
Amber R Miller
Jong H Yoon
Steffan K Soosman
April M Unruh
University of California Davis Medical Center · US

Funding

MRS and fMRI Studies of Neurobiological Factors in Panic DisorderR21MH076988 · NIMH · UNIVERSITY OF CALIFORNIA AT DAVIS · PI MADDOCK, RICHARD J · 2007 to 2008
$376k
NIMH NIH HHS 1R21MH076988NIMH NIH HHS R21 MH076988
6 · The paper itself

Abstract

backgroundPrior evidence suggests panic disorder (PD) is characterized by neurometabolic abnormalities, including increased brain lactate responses to neural activation. Increased lactate responses could reflect a general upregulation of metabolic responses to neural activation. However, prior studies in PD have not measured activity-dependent changes in brain metabolites other than lactate. Here we examine activity-dependent changes in both lactate and glutamate plus glutamine (glx) in PD.

methodsTwenty-one PD patients (13 remitted, 8 symptomatic) and 12 healthy volunteers were studied. A single-voxel, J-difference, magnetic resonance spectroscopy editing sequence was used to measure lactate and glx changes in visual cortex induced by visual stimulation.

resultsThe PD patients had significantly greater activity-dependent increases in brain lactate than healthy volunteers. The differences were significant for both remitted and symptomatic PD patients, who did not differ from each other. Activity-dependent changes in glx were significantly smaller in PD patients than in healthy volunteers. The temporal correlation between lactate and glx changes was significantly stronger in control subjects than in PD patients.

conclusionsThe novel demonstration that glx responses are diminished and temporally decoupled from lactate responses in PD contradicts the model of a general upregulation of activity-dependent brain metabolic responses in PD. The increase in activity-dependent brain lactate accumulation appears to be a trait feature of PD. Given the close relationship between lactate and pH in the brain, the findings are consistent with a model of brain metabolic and pH dysregulation associated with altered function of acid-sensitive fear circuits contributing to trait vulnerability in PD.

Indexed as

AdultAnalysis of VarianceFemaleGlutamic AcidGlutamineHumansLactic AcidMagnetic Resonance ImagingMagnetic Resonance SpectroscopyMaleMiddle AgedPhotic StimulationSomatoform DisordersTritiumVisual CortexGlutamic AcidGlutamineLactic AcidTritium

Identifiers

PMID23332354
PMCPMC3636170
OpenAlexW1978026348

What OpenQuestion holds

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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.