Cited by 117Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersNeuroendocrine regulation and behavior

Postnatal lesion evidence against a primary role for the corpus callosum in mouse sociability

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Yang, Mu, Clarke, Andrew M., Crawley, Jacqueline N.·2009·European Journal of Neuroscience

Abstract

The BTBR T+tf/J (BTBR) strain is an inbred strain of mice that displays prominent social deficits and repetitive behaviors analogous to the defining symptoms of autism, along with complete congenital agenesis of the corpus callosum (CC). The BTBR strain is genetically distant from the widely used C57BL/6J (B6) strain, which exhibits high levels of sociability, a low level of repetitive behaviors, and an intact CC. Emerging evidence implicates compromised interhemispherical connectivity in some cases of autism. We investigated the hypothesis that the disconnection of CC fiber tracts contributes to behavioral traits in mice that are relevant to the behavioral symptoms of autism. Surgical lesion of the CC in B6 mice at postnatal day 7 had no effect on juvenile play and adult social approaches, and did not elevate repetitive self‐grooming. In addition, LP/J, the strain that is genetically closest to the BTBR strain but has an intact CC, displayed juvenile play deficits and repetitive self‐grooming similar to those seen in BTBR mice. These corroborative results offer evidence against the hypothesis that the CC disconnection is a primary cause of low sociability and a high level of repetitive behaviors in inbred mice. Our findings indicate that genes mediating other aspects of neurodevelopment, including those whose mutations underlie more subtle disruptions in white matter pathways and connectivity, are more likely to contribute to the aberrant behavioral phenotypes in the BTBR mouse model of autism.

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Authors
Yang, M., Clarke, A. M., & Crawley, J. N.
Affiliations
National Institutes of Health (US)
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2009-04
Volume
29
Issue
8
Pages
1663-1677
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2090460252
Cited by
117
References
99
Citations by year
2026: 3 · 2025: 5 · 2024: 1 · 2023: 5 · 2022: 3 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 5 · 2015: 6 · 2014: 11 · 2013: 11 · 2012: 20
FWCI
7.42
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (Z99 MH999999)
  • National Institute of Mental Health (Z01MH002179)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
corpus callosum, sociability, repetitive behavior, autism spectrum disorder, BTBR T+tf/J mice, agenesis of the corpus callosum, corpus callosum lesions, interhemispheric connectivity, self-grooming, white matter tracts, mouse models of autism
MeSH terms
Animals, Anxiety, Autistic Disorder, Behavior, Animal, Corpus Callosum, Female, Grooming, Humans, Male, Mice, Inbred Strains, Motor Activity, Neuropsychological Tests, Phenotype, Play and Playthings, Social Behavior, Mice

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