Abstract
We measured protein and mRNA levels for nine gamma-aminobutyric acid A (GABAA) receptor subunits in three brain regions (cerebellum, superior frontal cortex, and parietal cortex) in subjects with autism versus matched controls. We observed changes in mRNA for a number of GABAA and GABAB subunits and overall reduced protein expression for GABAA receptor alpha 6 (GABRα6), GABAA receptor beta 2 (GABRβ2), GABAA receptor delta (GABRδ), GABA A receptor epsilon (GABRε), GABAA receptor gamma 2 (GABRγ2), GABAA receptor theta (GABRθ), and GABA A receptor rho 2 (GABRρ2) in superior frontal cortex from subjects with autism. Our data demonstrate systematic changes in GABA A&B subunit expression in brains of subjects with autism, which may help explain the presence of cognitive abnormalities in subjects with autism.
Original language | English (US) |
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Pages (from-to) | 1833-1845 |
Number of pages | 13 |
Journal | Journal of Autism and Developmental Disorders |
Volume | 44 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2014 |
Bibliographical note
Funding Information:Acknowledgments Human tissue was obtained from the Eunice Kennedy Shriver National Institute for Child Health and Human Development (NICHD) Brain and Tissue Bank for Developmental Disorders, University of Maryland, Baltimore, MD (The role of the NICHD Brain and Tissue Bank is to distribute tissue, and therefore, cannot endorse the studies performed or the interpretation of results); the Harvard Brain Tissue Resource Center, which is supported in part by Public Health Service grant number R24 MH068855; the Brain Endowment Bank, which is funded in part by the National Parkinson Foundation, Inc., Miami, Florida; and the Autism Tissue Program and is gratefully acknowledged. Grant support by the Eunice Kennedy Shriver National Institute of Child Health and Human Development (#5R01HD052074-01A2 and 3R01HD052074-03S1) and the Minnesota Medical Foundation Alfred and Ingrid Lenz Harrison Autism Initiative Fund to SHF is gratefully acknowledged. Dr. Fatemi is currently supported by the Bernstein Endowed Professorship in Adult Psychiatry.
Keywords
- Autism
- Brain
- Frontal cortex
- GABA
- GABRα6
- GABRβ2