Evidence map›Paper›PMID 27603392›Full record

ArticleMedicine2016

Increased GABA concentrations in type 2 diabetes mellitus are related to lower cognitive functioning.

Frank C G van Bussel, Walter H Backes, Paul A M Hofman, Nicolaas A J Puts, Richard A E Edden, Martin P J van Boxtel, Miranda T Schram, Coen D A Stehouwer, Joachim E Wildberger, Jacobus F A Jansen

Open access · goldAbstract read
In one paragraph

Article in Medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 12% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
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  11. Function of the GABAergic System in Diabetic Encephalopathy.Cellular and molecular neurobiology · 2023
    Review
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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

10 authors at 3 institutions in 2 countries.

Frank C G van BusselDepartments of Radiology and Nuclear Medicine School for Mental Health and Neuroscience (MHeNS) Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine F.M. Kirby Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD Department of Psychiatry and Neuropsychology Department of Internal Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.
Walter H Backes
Paul A M Hofman
Nicolaas A J Puts
Richard A E Edden
Martin P J van Boxtel
Miranda T Schram
Coen D A Stehouwer
Joachim E Wildberger
Jacobus F A Jansen
Maastricht University · NLJohns Hopkins University · USKennedy Krieger Institute · US

Funding

TR&D 4: Algorithms for functional and anatomical brain analysisP41EB015909 · NIBIB · HUGO W. MOSER RES INST KENNEDY KRIEGER · PI VAN ZIJL, PETER CM · 2012 to 2020
$13.1M
Universal GABA-edited MRS at 3TR01EB016089 · NIBIB · JOHNS HOPKINS UNIVERSITY · PI Richard Anthony Edward Edden · 2013 to 2026
$5.4M
NIBIB NIH HHS P41 EB015909NIBIB NIH HHS R01 EB016089
6 · The paper itself

Abstract

Type 2 diabetes mellitus is associated with accelerated cognitive decline. The underlying pathophysiological mechanisms still remain to be elucidated although it is known that insulin signaling modulates neurotransmitter activity, including inhibitory γ-aminobutyric acid (GABA) and excitatory glutamate (Glu) receptors. Therefore, we examined whether levels of GABA and Glu are related to diabetes status and cognitive performance.Forty-one participants with type 2 diabetes and 39 participants without type 2 diabetes underwent detailed cognitive assessments and 3-Tesla proton MR spectroscopy. The associations of neurotransmitters with type 2 diabetes and cognitive performance were examined using multivariate regression analyses controlling for age, sex, education, BMI, and percentage gray/white matter ratio in spectroscopic voxel.Analysis revealed higher GABA+ levels in participants with type 2 diabetes, in participants with higher fasting blood glucose levels and in participants with higher HbA1c levels, and higher GABA+ levels in participants with both high HbA1c levels and less cognitive performance.To conclude, participants with type 2 diabetes have alterations in the GABAergic neurotransmitter system, which are related to lower cognitive functioning, and hint at the involvement of an underlying metabolic mechanism.

Indexed as

CognitionAgedBlood GlucoseCase-Control StudiesCognitive DysfunctionDiabetes Mellitus, Type 2Femalegamma-Aminobutyric AcidGlutamic AcidGlycated HemoglobinGray MatterHumansMagnetic Resonance ImagingMagnetic Resonance SpectroscopyMaleMiddle AgedBlood Glucosegamma-Aminobutyric AcidGlutamic AcidGlycated Hemoglobinhemoglobin A1c protein, human

Identifiers

PMID27603392
PMCPMC5023915
OpenAlexW2510008645

What OpenQuestion holds

Textmetadata
LicenceCC BY-ND
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.