Cited by 722Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersFetal and Pediatric Neurological Disorders

Patches of Disorganization in the Neocortex of Children with Autism

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Stoner, Rich, Chow, Maggie L., Boyle, Maureen P., Sunkin, Susan M., Mouton, Peter R., Roy, Subhojit, Wynshaw-Boris, Anthony, Colamarino, Sophia A. +2 more·2014·New England Journal of Medicine

Abstract

BACKGROUND: Autism involves early brain overgrowth and dysfunction, which is most strongly evident in the prefrontal cortex. As assessed on pathological analysis, an excess of neurons in the prefrontal cortex among children with autism signals a disturbance in prenatal development and may be concomitant with abnormal cell type and laminar development. METHODS: To systematically examine neocortical architecture during the early years after the onset of autism, we used RNA in situ hybridization with a panel of layer- and cell-type-specific molecular markers to phenotype cortical microstructure. We assayed markers for neurons and glia, along with genes that have been implicated in the risk of autism, in prefrontal, temporal, and occipital neocortical tissue from postmortem samples obtained from children with autism and unaffected children between the ages of 2 and 15 years. RESULTS: We observed focal patches of abnormal laminar cytoarchitecture and cortical disorganization of neurons, but not glia, in prefrontal and temporal cortical tissue from 10 of 11 children with autism and from 1 of 11 unaffected children. We observed heterogeneity between cases with respect to cell types that were most abnormal in the patches and the layers that were most affected by the pathological features. No cortical layer was uniformly spared, with the clearest signs of abnormal expression in layers 4 and 5. Three-dimensional reconstruction of layer markers confirmed the focal geometry and size of patches. CONCLUSIONS: In this small, explorative study, we found focal disruption of cortical laminar architecture in the cortexes of a majority of young children with autism. Our data support a probable dysregulation of layer formation and layer-specific neuronal differentiation at prenatal developmental stages. (Funded by the Simons Foundation and others.).

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  • Neurobiological studies of both pathology and genetics suggest that the mechanisms behind autism are in place during fetal development.

    “Second, neurobiological studies of both pathology and genetics suggest that the mechanisms behind autism are in place during fetal development (Stoner et al. 2014), so from a biological standpoint, onset may be before birth.”
  • Postmortem studies found focal patches of abnormal laminar cytoarchitecture and cortical disorganization of neurons, but not glia, in prefrontal and temporal cortical tissue from a majority of young children with autism.

    “Postmortem studies have found focal patches of abnormal laminar cytoarchitecture and cortical disorganization of neurons, but not glia, in prefrontal and temporal cortical tissue from a majority of young children with autism, with the clearest signs of abnormal expression of excitatory neuronal markers in deep cortical layers 4 and 5 122.”
  • Evidence from neuroanatomical, animal, and epidemiologic studies supports prenatal and early postnatal origins of autism.

    “evidence from neuroanatomical, animal, and epidemiologic studies support the prenatal and early postnatal origins of autism.19–24”
  • Excess cortical neuron numbers and patches of abnormal cortical organization and cell migration implicate mid-fetal development as crucial in ASD pathophysiology.

    “Excess cortical neuron numbers and patches of abnormal cortical organization and cell migration are pathologies that also implicate mid-fetal development as being crucial in ASD pathophysiology16, 17.”
  • Patches of focal laminar disorganization and nearby clusters of mis-migrated neurons were found in prefrontal and temporal cortices in 10 of 11 young ASD cases.

    “Patches of focal laminar disorganization and nearby clusters of mis-migrated neurons were found in prefrontal and temporal cortices in 10 of 11 young ASD cases [34].”

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Authors
Stoner, R., Chow, M. L., Boyle, M. P., Sunkin, S. M., Mouton, P. R., Roy, S., Wynshaw-Boris, A., Colamarino, S. A., Lein, E. S., & Courchesne, E.
Affiliations
Allen Institute for Brain Science (US)
Venue
New England Journal of Medicine
Published
2014-03-27
Volume
370
Issue
13
Pages
1209-1219
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2142438562
Cited by
722
References
30
Citations by year
2026: 25 · 2025: 33 · 2024: 37 · 2023: 41 · 2022: 59 · 2021: 68 · 2020: 78 · 2019: 46 · 2018: 65 · 2017: 84 · 2016: 65 · 2015: 74 · 2014: 46
FWCI
50.00
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (P50MH081755)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (N01 HD 43383, N01-HD-4-3368)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
Keywords
autism spectrum disorder, neocortex, prefrontal cortex, temporal cortex, occipital cortex, neuronal differentiation, fetal brain development, RNA in situ hybridization, postmortem brain, children
MeSH terms
Adolescent, Autistic Disorder, Cell Count, Child, Child, Preschool, Humans, Nerve Tissue Proteins, Neurons, RNA, Biomarkers, Gene Expression, Cryoultramicrotomy, Neurofilament Proteins, In Situ Hybridization, Neocortex, Imaging, Three-Dimensional, Cyclic Nucleotide Phosphodiesterases, Type 1, Neurogenesis, Nuclear Receptor Subfamily 1, Group F, Member 2, Calbindin 1

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