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May 8, 2026International Journal of Paediatric Dentistry

Oral and Gut Microbiota in Individuals With Autism Spectrum Disorder: A Pilot Case–Control Study

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Authors

AIAiri IidaYTYuki ToyotaTITatsuki Itagaki

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Overview

Pilot case-control study identifies distinct microbiota signatures in individuals with autism spectrum disorder, suggesting implications for screening.

Key Points

  • This pilot study aims to characterize oral and gut microbiota alterations in individuals with autism spectrum disorder (ASD).
  • Collected salivary and faecal samples from 10 individuals with ASD and 10 typically developing controls.
  • Evaluated microbiota composition using 16S ribosomal RNA marker-gene sequencing.
  • Higher relative abundances of Neisseria in the oral microbiota of ASD individuals.
  • Enrichment of Faecalibacterium in the gut microbiota of ASD individuals.

Cite This Study

Iida et al. (2026) studied this question.

synapsesocial.com/papers/69fd7ee0bfa21ec5bbf0739ehttps://doi.org/10.1111/ipd.70095
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Oral Microbiota Composition and Its Association with Gastrointestinal and Developmental Abnormalities in Children with Autism Spectrum Disorder2025 · 2 citations
  2. 2From Mouth to Mind: Investigating Oral Microbial Contributions to Autism Spectrum Disorder2026
  3. 3Gut Microbiota and Autism Spectrum Disorders: Neurodevelopmental, Behavioral, and Gastrointestinal Interactions2025 · 2 citations
  4. 4Oral microbiota in autistic children: diagnosis-related differences and associations with clinical characteristics2024 · 12 citations
  5. 5Gut bacterial characteristics in children with autism spectrum disorder according to symptom severity: a cross-sectional study2026