Cited by 250Autism Spectrum Disorder ResearchEpigenetics and DNA MethylationGenetics and Neurodevelopmental Disorders

Metabolic imbalance associated with methylation dysregulation and oxidative damage in children with autism

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Melnyk, Stepan, Fuchs, George J., Schulz, Eldon, Lopez, Maya, Kahler, Stephen G., Fussell, Jill J., Bellando, Jayne, Pavliv, Oleksandra +4 more·2012·Journal of Autism and Developmental Disorders

Abstract

Oxidative stress and abnormal DNA methylation have been implicated in the pathophysiology of autism. We investigated the dynamics of an integrated metabolic pathway essential for cellular antioxidant and methylation capacity in 68 children with autism, 54 age-matched control children and 40 unaffected siblings. The metabolic profile of unaffected siblings differed significantly from case siblings but not from controls. Oxidative protein/DNA damage and DNA hypomethylation (epigenetic alteration) were found in autistic children but not paired siblings or controls. These data indicate that the deficit in antioxidant and methylation capacity is specific for autism and may promote cellular damage and altered epigenetic gene expression. Further, these results suggest a plausible mechanism by which pro-oxidant environmental stressors may modulate genetic predisposition to autism.

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  • Several lines of evidence indicate oxidative stress and mitochondrial dysfunction are prevalent in individuals with ASD.

    “There are presently several lines of evidence indicating oxidative stress and mitochondrial dysfunction are prevalent in individuals with ASD [3,10,11,12,13,14,15,16].”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [14]

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Authors
Melnyk, S., Fuchs, G. J., Schulz, E., Lopez, M., Kahler, S. G., Fussell, J. J., Bellando, J., Pavliv, O., Rose, S., Seidel, L., Gaylor, D. W., & Jill James, S.
Affiliations
  • Arkansas Children's Hospital (US)
  • University of Arkansas for Medical Sciences (US)
Venue
Journal of Autism and Developmental Disorders
Published
2011-04-26
Volume
42
Issue
3
Pages
367-377
ISSN
  • 0162-3257 (ISSN-L)
  • 1573-3432
OpenAlex
W2070592913
Cited by
250
References
85
Citations by year
2026: 9 · 2025: 11 · 2024: 11 · 2023: 11 · 2022: 13 · 2021: 15 · 2020: 26 · 2019: 13 · 2018: 24 · 2017: 16 · 2016: 25 · 2015: 17 · 2014: 23 · 2013: 23 · 2012: 13
FWCI
9.58
Type
journal article
Language
en
Open access
Locations
  • Journal of Autism and Developmental Disorders (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Arkansas Biosciences Institute
  • National Institutes of Health
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD051873)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
autism spectrum disorder, oxidative stress, DNA methylation, DNA hypomethylation, oxidative protein damage, oxidative DNA damage, antioxidant capacity, metabolic pathways, epigenetic modifications, unaffected siblings, environmental stressors, genetic susceptibility
MeSH terms
Autistic Disorder, Child, Child, Preschool, Female, Glutathione, Humans, Male, Case-Control Studies, Reactive Oxygen Species, Oxidative Stress, DNA Methylation

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