Evidence map›Paper›PMID 33041761›Full record

ArticleFrontiers in neuroscience2020

Reproducibility of Glutamate, Glutathione, and GABA Measurements

Ofer M Gonen, Bradford A Moffat, Patrick Kwan, Terence J O'Brien, Patricia M Desmond, Elaine Lui

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neuroscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 15% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 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

6 authors at 4 institutions in 1 country.

Ofer M GonenDepartment of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia.
Bradford A MoffatDepartment of Medicine and Radiology, The University of Melbourne, Parkville, VIC, Australia.
Patrick KwanDepartment of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia.
Terence J O'BrienDepartment of Neurology, The Royal Melbourne Hospital, Parkville, VIC, Australia.
Patricia M DesmondDepartment of Medicine and Radiology, The University of Melbourne, Parkville, VIC, Australia.
Elaine LuiDepartment of Medicine and Radiology, The University of Melbourne, Parkville, VIC, Australia.
University of Melbourne · AUMonash University · AUThe Alfred Hospital · AUThe Royal Melbourne Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeDerangements in brain glutamate, glutathione, and γ-amino butyric acid (GABA) are implicated in a range of neurological disorders. Reliable methods to measure these compounds non-invasively

methodsTen right-handed healthy volunteers underwent 7-Tesla MRI scans on 2 separate days, not more than 2 weeks apart. On each day two scanning sessions took place, with a re-positioning break in between. High-resolution isotropic anatomical scans were acquired prior to each scan, followed by single-voxel

resultsMaximal Cramér-Rao lower bounds for glutamate, glutathione, and GABA were 2.0, 8.0, and 14.0%, respectively. Mean coefficients of variation within sessions were 5.9 ± 4.8%, 9.3 ± 7.6%, and 11.5 ± 8.8%, and between sessions were 4.6 ± 4.5%, 8.3 ± 5.7%, and 9.2 ± 8.7%, respectively. The mean (±SD) Dice's coefficient for voxel overlap was 90 ± 4% within sessions and 86 ± 7% between sessions.

conclusionGlutamate, glutathione, and GABA can be reliably quantified using STEAM MRS at 7-Tesla from the posterior cingulate and precuneus cortices of healthy human subjects. STEAM MRS at 7-Tesla may be used to study the metabolic behavior of this important resting-state hub in various disease states.

Indexed as

default mode networkmagnetic resonance spectroscopyposterior cingulate cortexprecuneusreproducibilitySTEAM

Identifiers

PMID33041761
PMCPMC7522573
OpenAlexW3092234514

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.