Cited by 122Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersAntioxidant Activity and Oxidative Stress

Increase in Cerebellar Neurotrophin-3 and Oxidative Stress Markers in Autism

Sajdel-Sulkowska, Elizabeth M., Xu, Ming, Koibuchi, Noriyuki·2009·The Cerebellum

Abstract

Autism is a neurodevelopmental disorder characterized by social and language deficits, ritualistic-repetitive behaviors and disturbance in motor functions. Data of imaging, head circumference studies, and Purkinje cell analysis suggest impaired brain growth and development. Both genetic predisposition and environmental triggers have been implicated in the etiology of autism, but the underlying cause remains unknown. Recently, we have reported an increase in 3-nitrotyrosine (3-NT), a marker of oxidative stress damage to proteins in autistic cerebella. In the present study, we further explored oxidative damage in the autistic cerebellum by measuring 8-hydroxydeoxyguanosine (8-OH-dG), a marker of DNA modification, in a subset of cases analyzed for 3-NT. We also explored the hypothesis that oxidative damage in autism is associated with altered expression of brain neurotrophins critical for normal brain growth and differentiation. The content of 8-OH-dG in cerebellar DNA isolated by the proteinase K method was measured using an enzyme-linked immunosorbent assay (ELISA); neurotrophin-3 (NT-3) levels in cerebellar homogenates were measured using NT-3 ELISA. Cerebellar 8-OH-dG showed trend towards higher levels with the increase of 63.4% observed in autism. Analysis of cerebellar NT-3 showed a significant (p = 0.034) increase (40.3%) in autism. Furthermore, there was a significant positive correlation between cerebellar NT-3 and 3-NT (r = 0.83; p = 0.0408). These data provide the first quantitative measure of brain NT-3 and show its increase in the autistic brain. Altered levels of brain NT-3 are likely to contribute to autistic pathology not only by affecting brain axonal targeting and synapse formation but also by further exacerbating oxidative stress and possibly contributing to Purkinje cell abnormalities.

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Crossref · 10.1007/s12311-009-0105-9

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  • In the cerebellum of individuals with autism, levels of lipid hydroperoxide, malonyldialdehyde, 8-hydroxy-2'-deoxyguanosine, protein carbonyl, and 3-nitrotyrosine are significantly increased.

    “In the cerebellum, the levels of lipid hydroperoxide [103], a product of fatty acid oxidation; of malonyldialdehyde [104], an end-product of lipid peroxidation; of 8-hydroxy-2’-deoxyguanosine (8-OH-dG) [105, 106], a marker of oxidative DNA damage; of protein carbonyl [107], a marker of protein oxidation; and of 3-nitrotyrosine [108], a marker of protein nitration, were significantly increased in”

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Authors
Sajdel-Sulkowska, E. M., Xu, M., & Koibuchi, N.
Affiliations
Gunma University (JP)
Venue
The Cerebellum
Published
2009-04-09
Volume
8
Issue
3
Pages
366-372
ISSN
  • 1473-4222 (ISSN-L)
  • 1473-4230
OpenAlex
W2059010901
Cited by
122
References
54
Citations by year
2026: 2 · 2025: 6 · 2024: 4 · 2023: 10 · 2022: 6 · 2021: 10 · 2020: 5 · 2019: 7 · 2018: 5 · 2017: 6 · 2016: 4 · 2015: 10 · 2014: 12 · 2013: 9 · 2012: 15
FWCI
4.03
Type
journal article
Language
en
Open access
closed
Locations
  • The Cerebellum (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Autism Research Institute
  • Japan Society for the Promotion of Science
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 › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
autism spectrum disorder, neurotrophin-3, oxidative stress, cerebellum, nitrotyrosine, 8-hydroxy-2'-deoxyguanosine, DNA oxidation, Purkinje cells, neurotrophin expression
MeSH terms
8-Hydroxy-2'-Deoxyguanosine, Adolescent, Adult, Analysis of Variance, Autistic Disorder, Cerebellum, Child, Deoxyguanosine, Enzyme-Linked Immunosorbent Assay, Female, Humans, Male, Statistics as Topic, Oxidative Stress, Neurotrophin 3, Young Adult

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