Cited by 137Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchNeuroscience and Neuropharmacology Research

Metabotropic Glutamate Receptor 5 Upregulation in Children with Autism is Associated with Underexpression of Both Fragile X Mental Retardation Protein and GABAA Receptor Beta 3 in Adults with Autism

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Fatemi, S. Hossein, Folsom, Timothy D., Kneeland, Rachel E., Liesch, Stephanie B.·2011·The Anatomical Record

Abstract

Recent work has demonstrated the impact of dysfunction of the GABAergic signaling system in brain and the resultant behavioral pathologies in subjects with autism. In animal models, altered expression of Fragile X mental retardation protein (FMRP) has been linked to downregulation of GABA receptors. Interestingly, the autistic phenotype is also observed in individuals with Fragile X syndrome. This study was undertaken to test previous theories relating abnormalities in levels of FMRP to GABA A receptor underexpression. We observed a significant reduction in levels of FMRP in the vermis of adults with autism. Additionally, we found that levels of metabotropic glutamate receptor 5 (mGluR5) protein were significantly increased in vermis of children with autism versus age and postmortem interval matched controls. There was also a significant decrease in level of GABA A receptor beta 3 (GABRβ3) protein in vermis of adult subjects with autism. Finally, we found significant increases in glial fibrillary acidic protein in vermis of both children and adults with autism when compared with controls. Taken together, our results provide further evidence that altered FMRP expression and increased mGluR5 protein production potentially lead to altered expression of GABA A receptors. Anat Rec,, 2011. © 2011 Wiley‐Liss, Inc.

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  • Postmortem studies show reduced FMRP in cerebella and frontal cortices of autistic subjects without FXS mutations.

    “Recent postmortem work has shown reductions in FMRP in cerebella and frontal cortices of subjects with autism who do not carry a mutation for FXS [123, 128].”

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Authors
Fatemi, S. H., Folsom, T. D., Kneeland, R. E., & Liesch, S. B.
Affiliations
University of Minnesota (US)
Corresponding author
Fatemi, S. Hossein
Venue
The Anatomical Record
Publisher
Wiley
Published
2011-09-08
Volume
294
Issue
10
Pages
1635-1645
ISSN
  • 1932-8486 (ISSN-L)
  • 1932-8494
OpenAlex
W2015606490
Cited by
137
References
83
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 10 · 2022: 10 · 2021: 8 · 2020: 9 · 2019: 5 · 2018: 13 · 2017: 3 · 2016: 10 · 2015: 13 · 2014: 19 · 2013: 13 · 2012: 15
FWCI
9.56
Type
journal article
Language
en
Open access
Locations
  • The Anatomical Record (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Parkinson Foundation
  • Parkinson's Foundation
  • National Institute of Mental Health (R24MH068855)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD052074)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
autism spectrum disorder, metabotropic glutamate receptor 5, FMRP, GABAergic neurotransmission, cerebellar vermis, glial fibrillary acidic protein, postmortem brain, children and adults with autism, fragile X syndrome
MeSH terms
Adolescent, Adult, Age Factors, Autistic Disorder, Child, Child, Preschool, Electrophoresis, Polyacrylamide Gel, Female, Humans, Male, Middle Aged, Receptors, GABA-A, Blotting, Western, Receptors, Metabotropic Glutamate, Fragile X Messenger Ribonucleoprotein 1, Young Adult, Receptor, Metabotropic Glutamate 5

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