Cited by 495Gut microbiota and healthAutism Spectrum Disorder ResearchGastrointestinal motility and disorders

Impaired Carbohydrate Digestion and Transport and Mucosal Dysbiosis in the Intestines of Children with Autism and Gastrointestinal Disturbances

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Williams, Brent L., Hornig, Mady, Buie, Timothy, Bauman, Margaret L., Cho Paik, Myunghee, Wick, Ivan, Bennett, Ashlee, Jabado, Omar +2 more·2011·PLoS ONE

Abstract

Gastrointestinal disturbances are commonly reported in children with autism, complicate clinical management, and may contribute to behavioral impairment. Reports of deficiencies in disaccharidase enzymatic activity and of beneficial responses to probiotic and dietary therapies led us to survey gene expression and the mucoepithelial microbiota in intestinal biopsies from children with autism and gastrointestinal disease and children with gastrointestinal disease alone. Ileal transcripts encoding disaccharidases and hexose transporters were deficient in children with autism, indicating impairment of the primary pathway for carbohydrate digestion and transport in enterocytes. Deficient expression of these enzymes and transporters was associated with expression of the intestinal transcription factor, CDX2. Metagenomic analysis of intestinal bacteria revealed compositional dysbiosis manifest as decreases in Bacteroidetes, increases in the ratio of Firmicutes to Bacteroidetes, and increases in Betaproteobacteria. Expression levels of disaccharidases and transporters were associated with the abundance of affected bacterial phylotypes. These results indicate a relationship between human intestinal gene expression and bacterial community structure and may provide insights into the pathophysiology of gastrointestinal disturbances in children with autism.

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Crossref · 10.1371/journal.pone.0024585

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  • Ileal and cecal biopsies from children with ASD and GI dysfunction showed increased Firmicutes and decreased Bacteroidetes.

    “Ileal and cecal biopsies from children with ASD and GI dysfunction showed increased Firmicutes and decreased Bacteroidetes [51].”
  • Two studies showed increases in alpha diversity and six studies showed no significant changes in alpha diversity.

    “Two studies showed increases [31, 33] and six studies showed no significant changes in alpha diversity [36, 42, 43, 48, 50, 54].”
  • The rest of the studies observed either a decrease in Bacteroidetes percentage or no significant differences between cases and controls.

    “The rest of the studies observed either a decrease in Bacteroidetes percentage [50, 54] or no significant differences between cases and controls [31, 36, 48].”
  • At the Firmicutes phylum level, none of the six studies showed an increase in absolute or relative abundance.

    “At the phylum level, none of the six studies showed an increase in absolute or relative abundance [31, 33, 36, 48, 51, 54].”
  • For relative abundance in total and metabolically active Firmicutes, studies demonstrated either a decrease or no significant differences between children with ASD, SIB, and HC.

    “For relative abundance in both total and metabolically active Firmicutes, the studies demonstrated either a decrease [31, 33, 36] or no significant differences between children with ASD, SIB, and HC [48, 51, 54].”

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Authors
Williams, B. L., Hornig, M., Buie, T., Bauman, M. L., Cho Paik, M., Wick, I., Bennett, A., Jabado, O., Hirschberg, D. L., & Lipkin, W. I.
Affiliations
  • Columbia University (US)
  • Massachusetts General Hospital (US)
  • Harvard University (US)
Corresponding author
Lipkin, W. Ian
Venue
PLoS ONE
Published
2011-09-16
Volume
6
Issue
9
Pages
e24585
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2005365566
Cited by
492
References
96
Citations by year
2026: 10 · 2025: 34 · 2024: 25 · 2023: 31 · 2022: 41 · 2021: 46 · 2020: 38 · 2019: 52 · 2018: 45 · 2017: 21 · 2016: 31 · 2015: 37 · 2014: 32 · 2013: 28 · 2012: 19
FWCI
10.51
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • U.S. Department of Defense
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (NS 047537, U01NS047537)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
autism spectrum disorder, gastrointestinal diseases, carbohydrate digestion, disaccharidases, hexose transporters, intestinal gene expression, CDX2, Firmicutes/Bacteroidetes ratio, Betaproteobacteria, Bacteroidetes, enterocytes
MeSH terms
Autistic Disorder, Biological Transport, Child, Preschool, Clostridium, Digestion, Female, Food Hypersensitivity, Gastrointestinal Diseases, Humans, Ileum, Infant, Intestinal Mucosa, Male, RNA, Bacterial, RNA, Messenger, RNA, Ribosomal, 16S, Time Factors, Comorbidity, Membrane Transport Proteins, Carbohydrate Metabolism, Metagenomics, Transcriptome

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