Cited by 94Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersNeural dynamics and brain function

Exploring the relationship between cortical GABA concentrations, auditory gamma‐band responses and development in ASD: Evidence for an altered maturational trajectory in ASD

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Port, Russell G., Gaetz, William, Bloy, Luke, Wang, Dah‐Jyuu, Blaskey, Lisa, Kuschner, Emily S., Levy, Susan E., Brodkin, Edward S. +1 more·2017·Autism Research

Abstract

Autism spectrum disorder (ASD) is hypothesized to arise from imbalances between excitatory and inhibitory neurotransmission (E/I imbalance). Studies have demonstrated E/I imbalance in individuals with ASD and also corresponding rodent models. One neural process thought to be reliant on E/I balance is gamma‐band activity (Gamma), with support arising from observed correlations between motor, as well as visual, Gamma and underlying GABA concentrations in healthy adults. Additionally, decreased Gamma has been observed in ASD individuals and relevant animal models, though the direct relationship between Gamma and GABA concentrations in ASD remains unexplored. This study combined magnetoencephalography (MEG) and edited magnetic resonance spectroscopy (MRS) in 27 typically developing individuals (TD) and 30 individuals with ASD. Auditory cortex localized phase‐locked Gamma was compared to resting Superior Temporal Gyrus relative cortical GABA concentrations for both children/adolescents and adults. Children/adolescents with ASD exhibited significantly decreased GABA+/Creatine (Cr) levels, though typical Gamma. Additionally, these children/adolescents lacked the typical maturation of GABA+/Cr concentrations and gamma‐band coherence. Furthermore, children/adolescents with ASD additionally failed to exhibit the typical GABA+/Cr to gamma‐band coherence association. This altered coupling during childhood/adolescence may result in Gamma decreases observed in the adults with ASD. Therefore, individuals with ASD exhibit improper local neuronal circuitry maturation during a childhood/adolescence critical period, when GABA is involved in configuring of such circuit functioning. Provocatively a novel line of treatment is suggested (with a critical time window); by increasing neural GABA levels in children/adolescents with ASD, proper local circuitry maturation may be restored resulting in typical Gamma in adulthood. Autism Res 2017, 10: 593–607. © 2016 International Society for Autism Research, Wiley Periodicals, Inc.

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  1. Hussman JP 2001 Suppressed GABAergic inhibition as a common factor in suspected etiologies of autism Journal of Autism and Developmental Disorders 31 2 247 8 Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/23402403 11450824
  2. Mescher M Merkle H Kirsch J Garwood M Gruetter R 1998 Simultaneous in vivo spectral editing and water suppression NMR in Biomedicine 11 6 266 72 Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/9802468 9802468
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Authors
Port, R. G., Gaetz, W., Bloy, L., Wang, D., Blaskey, L., Kuschner, E. S., Levy, S. E., Brodkin, E. S., & Roberts, T. P. L.
Affiliations
  • Children's Hospital of Philadelphia (US)
  • University of Pennsylvania (US)
Corresponding author
Roberts, Timothy P.L.
Venue
Autism Research
Publisher
Wiley
Published
2016-10
Volume
10
Issue
4
Pages
593-607
ISSN
  • 1939-3792 (ISSN-L)
  • 1939-3806
OpenAlex
W2528003976
Cited by
94
References
69
Citations by year
2026: 4 · 2025: 7 · 2024: 12 · 2023: 13 · 2022: 6 · 2021: 14 · 2020: 7 · 2019: 11 · 2018: 6 · 2017: 13 · 2014: 1
FWCI
6.36
Type
journal article
Language
en
Open access
Locations
  • Autism Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Intellectual and Developmental Disabilities Research Center (IDDRC – U54 HD086984)
  • Children's Hospital of Philadelphia
  • Nancy Lurie Marks Family Foundation
  • National Institutes of Health (UL1RR024134)
  • National Center for Research Resources (NIH‐R01DC008871)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
autism spectrum disorder, GABA, gamma oscillations, excitatory-inhibitory imbalance, auditory cortex, superior temporal gyrus, gamma-band coherence, brain maturation, critical period, children and adolescents, MEG
MeSH terms
Autism Spectrum Disorder, Adolescent, Adult, Age Factors, Auditory Cortex, Cerebral Cortex, Child, Evoked Potentials, Auditory, Female, gamma-Aminobutyric Acid, Humans, Magnetic Resonance Imaging, Male, Nerve Net, Magnetic Resonance Spectroscopy, Reference Values, Temporal Lobe, Magnetoencephalography, Young Adult, Gamma Rhythm

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