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Gepubliceerd in: Journal of Autism and Developmental Disorders 2/2009

01-02-2009 | Original Paper

GABAA Receptor Downregulation in Brains of Subjects with Autism

Auteurs: S. Hossein Fatemi, Teri J. Reutiman, Timothy D. Folsom, Paul D. Thuras

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 2/2009

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Abstract

Gamma-aminobutyric acid A (GABAA) receptors are ligand-gated ion channels responsible for mediation of fast inhibitory action of GABA in the brain. Preliminary reports have demonstrated altered expression of GABA receptors in the brains of subjects with autism suggesting GABA/glutamate system dysregulation. We investigated the expression of four GABAA receptor subunits and observed significant reductions in GABRA1, GABRA2, GABRA3, and GABRB3 in parietal cortex (Brodmann’s Area 40 (BA40)), while GABRA1 and GABRB3 were significantly altered in cerebellum, and GABRA1 was significantly altered in superior frontal cortex (BA9). The presence of seizure disorder did not have a significant impact on GABAA receptor subunit expression in the three brain areas. Our results demonstrate that GABAA receptors are reduced in three brain regions that have previously been implicated in the pathogenesis of autism, suggesting widespread GABAergic dysfunction in the brains of subjects with autism.
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Metagegevens
Titel
GABAA Receptor Downregulation in Brains of Subjects with Autism
Auteurs
S. Hossein Fatemi
Teri J. Reutiman
Timothy D. Folsom
Paul D. Thuras
Publicatiedatum
01-02-2009
Uitgeverij
Springer US
Gepubliceerd in
Journal of Autism and Developmental Disorders / Uitgave 2/2009
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI
https://doi.org/10.1007/s10803-008-0646-7

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