Cited by 275Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchNeuroscience and Neuropharmacology Research

Sensorimotor gating abnormalities in young males with fragile X syndrome and Fmr1-knockout mice.

Frankland, P W, Wang, Y, Rosner, B, Shimizu, T, Balleine, B W, Dykens, E M, Ornitz, E M, Silva, A J·2004·Molecular Psychiatry

Abstract

Fragile X syndrome (FXS) is the most common single gene (FMR1) disorder affecting cognitive and behavioral function in humans. This syndrome is characterized by a cluster of abnormalities including lower IQ, attention deficits, impairments in adaptive behavior and increased incidence of autism. Here, we show that young males with FXS have profound deficits in prepulse inhibition (PPI), a basic marker of sensorimotor gating that has been extensively studied in rodents. Importantly, the magnitude of the PPI impairments in the fragile X children predicted the severity of their IQ, attention, adaptive behavior and autistic phenotypes. Additionally, these measures were highly correlated with each other, suggesting that a shared mechanism underlies this complex phenotypic cluster. Studies in Fmr1-knockout mice also revealed sensorimotor gating and learning abnormalities. However, PPI and learning were enhanced rather than reduced in the mutants. Therefore, these data show that mutations of the FMR1 gene impact equivalent processes in both humans and mice. However, since these phenotypic changes are opposite in direction, they also suggest that murine compensatory mechanisms following loss of FMR1 function differ from those in humans.

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Crossref · 10.1038/sj.mp.4001432

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  • Auditory hypersensitivity is also evident in Fmr1 KO mice, which exhibit increased susceptibility to audiogenic seizures and abnormal auditory startle.

    “Auditory hypersensitivity is also evident in Fmr1 knockout (KO) mice, a mouse model of FXS, which exhibit increased susceptibility to audiogenic seizures (Musumeci et al., 2000) and abnormal auditory startle (Frankland et al., 2004).”

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Authors
Frankland, P. W., Wang, Y., Rosner, B., Shimizu, T., Balleine, B. W., Dykens, E. M., Ornitz, E. M., & Silva, A. J.
Affiliations
University of California, Los Angeles (US)
Corresponding author
  • Ornitz, E M
  • Silva, A J
Venue
Molecular Psychiatry
Published
2004-02-10
Volume
9
Issue
4
Pages
417-425
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2046570248
Cited by
275
References
42
Citations by year
2026: 5 · 2025: 4 · 2024: 2 · 2023: 11 · 2022: 14 · 2021: 12 · 2020: 12 · 2019: 14 · 2018: 12 · 2017: 16 · 2016: 10 · 2015: 15 · 2014: 22 · 2013: 13 · 2012: 18
FWCI
4.80
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
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
fragile X syndrome, FMR1 gene, sensorimotor gating, prepulse inhibition, Fmr1 knockout mice, intellectual disability, attention deficits, autism spectrum disorder, adaptive behavior, learning deficits, compensatory mechanisms, human-mouse comparison
MeSH terms
Acoustic Stimulation, Adolescent, Analysis of Variance, Animals, Mental Disorders, Child, Child Behavior Disorders, Child Development Disorders, Pervasive, Cognition Disorders, Conditioning, Psychological, Disease Models, Animal, Fragile X Syndrome, Humans, Male, Mutation, Nerve Tissue Proteins, Neural Inhibition, Neuropsychological Tests, Predictive Value of Tests, Severity of Illness Index, Reflex, Startle, Ion Channel Gating, RNA-Binding Proteins, Mice, Knockout, Mice, Fragile X Messenger Ribonucleoprotein 1

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