Evidence map›Paper›PMID 31244630›Full record

ArticleFrontiers in human neuroscience2019

Low Prefrontal GABA Levels Are Associated With Poor Cognitive Functions in Professional Boxers.

Geon Ha Kim, Ilhyang Kang, Hyeonseok Jeong, Shinwon Park, Haejin Hong, Jinsol Kim, Jung Yoon Kim, Richard A E Edden, In Kyoon Lyoo, Sujung Yoon

Open access · goldAbstract read
In one paragraph

Article in Frontiers in human neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  5. The Role of Nanotechnology in Understanding the Pathophysiology of Traumatic Brain Injury.Central nervous system agents in medicinal chemistry · 2025
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  12. Neurochemistry of Visual Attention.Frontiers in neuroscience · 2021
    Review
  13. Can Neurocognitive Function Predict Lower Extremity Injuries in Male Collegiate Athletes?International journal of environmental research and public health · 2020
    Article
  14. Review
  15. Article
  16. Article
  17. Article
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.

Geon Ha KimEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Ilhyang KangEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Hyeonseok JeongDepartment of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
Shinwon ParkEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Haejin HongEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Jinsol KimEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Jung Yoon KimEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Richard A E EddenDivision of Neuroradiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
In Kyoon LyooEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Sujung YoonEwha Brain Institute, Ewha Womans University, Seoul, South Korea.
Ewha Womans University · KRCatholic University of Korea · KRJohns Hopkins Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cognitive dysfunction has long been recognized as a frequently observed symptom in individuals with repetitive mild traumatic brain injury (rmTBI) such as professional boxers. The exact neurobiological mechanisms underlying this cognitive deficit have not yet been identified, but it is agreed upon that the prefrontal cortex (PFC) is one of the most commonly affected brain regions in professional boxers. Noting the pivotal role of the two major brain metabolites in human cognitive functions, γ-aminobutyric acid (GABA) and glutamate/glutamine (Glx), we hypothesized that alterations in levels of GABA and Glx in the PFC would be prominent and may correlate with cognitive deficits in professional boxers. Twenty male professional boxers (Boxers) and 14 age-matched healthy males who had never experienced any TBI (CON) were recruited. Using a 3T magnetic resonance imaging (MRI) scanner, single-voxel proton magnetic resonance spectroscopy with Mescher-Garwood point-resolved spectroscopy (MEGA-PRESS) sequence was performed to evaluate the levels of GABA and Glx in the PFC. Cognitive function was assessed using the memory and attention domains from the Cambridge Neuropsychological Test Automated Battery. The Boxers showed lower GABA level in the PFC compared to the CON, while also showing lower performance in the attention and memory domains. There were no significant between-group differences in Glx levels. Furthermore, the GABA level correlated with memory performance in the Boxers, but not in attention performance. The current findings may suggest that alterations in GABA levels in the PFC may be a potential neurochemical correlate underlying memory dysfunction related to rmTBI.

Indexed as

cognitive impairmentGABAprefrontal cortexprofessional boxerstraumatic brain injury

Identifiers

PMID31244630
PMCPMC6579878
OpenAlexW2948044687

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.